What damage did the US do to Iran’s nuclear program? Why it’s so hard to know

Source: The Conversation – USA – By Joshua Rovner, Associate Professor of International Relations, American University

Gen. Dan Caine, chairman of the Joint Chiefs of Staff, describes the U.S. military attack on Iranian nuclear sites, which occurred on June 21, 2025, . AP Photo/Alex Brandon

The U.S. Air Force dropped a dozen ground-penetrating bombs, each weighing 30,000 pounds (13,607 kilograms), in a raid on Iran’s nuclear site at Fordo on June 21, 2025. The attack was an attempt to reach the uranium enrichment facility buried deep inside a mountain. The target, President Donald Trump declared, was “completely and totally obliterated.”

Others were less sure. On June 24, the administration canceled a classified intelligence briefing to members of Congress, leading to frustration among those with questions about White House claims. While Defense Intelligence Agency analysts apparently agree that the strikes did real damage, they dispute the idea that the attack permanently destroyed Iran’s enrichment capability. Reports emerged that their initial analysis found that the strikes had only set Iran back a few months.

Such disagreements are unsurprising. Battle damage assessment – originally called bomb damage assessment – is notoriously difficult, and past wars have featured intense controversies among military and intelligence professionals. In World War II, poor weather and the limits of available technology conspired against accuracy.

Battle damage assessment remained a thorny problem decades later, even after radical improvements in surveillance technology. In the first Gulf War in 1990, for example, military leaders argued with CIA officials over the effects of airstrikes against Iraq’s armored forces.

I am a scholar of international relations who studies intelligence and strategy in international conflicts, and the author of “Fixing the Facts: National Security and the Politics of Intelligence.” I know from history that overcoming the challenges of battle damage assessment is especially hard when the target is a facility hidden under hundreds of feet of earth and rock, as is the case at Fordo.

How the U.S. military’s ‘bunker buster’ bomb works.

Tools of the trade

The intelligence community has a number of tools and techniques that can help with challenges like assessing the damage at Fordo. Imagery intelligence such as satellite photography is the obvious starting point. Before-and-after comparisons might reveal collapsed tunnels or topographical changes, suggesting unseen subterranean damage.

More exotic data collection techniques may be able to help infer the underground effects based on particle and electromagnetic emissions from the site. These platforms provide what is called measurement and signatures intelligence. Specialized sensors can measure nuclear radiation, seismographic information and other potentially revealing information from camouflaged facilities. When combined with traditional imagery, measurement and signatures intelligence can provide a more detailed model of the likely effects of the bombing.

Other sources may prove useful as well. Reporting from human intelligence assets – spies or unwitting informers with firsthand or secondhand knowledge – may provide information on internal Iranian assessments. These may be particularly valuable because Iranian officials presumably know how much equipment was removed in advance, as well as the location of previously enriched uranium.

The same is true for signals intelligence, which intercepts and interprets communications. Ideally, battle damage assessment will become more comprehensive and accurate as these sources of intelligence are integrated into a single assessment.

Pervasive uncertainty

But even in that case, it will still be difficult to estimate the broader effects on Iran’s nuclear program. Measuring the immediate physical effects on Fordo and other nuclear sites is a kind of puzzle, or a problem that can be solved with sufficient evidence. Estimating the long-term effects on Iranian policy is a mystery, or a problem that cannot be solved even with abundant information on hand. It’s impossible to know how Iran’s leaders will adapt over time to their changing circumstances. They themselves cannot know either; perceptions of the future are inherently uncertain.

Regarding the puzzle over Fordo, Trump seems to believe that the sheer volume of explosives dropped on the site must have done the job. As White House Press Secretary Karoline Leavitt put it: “Everyone knows what happens when you drop 14 30,000-pound bombs perfectly on their targets: total obliteration.”

But the fact that Fordo is buried in the side of a mountain is a reason to doubt this commonsense conclusion. In addition, Iran may have moved enriched uranium and specialized equipment from the site in advance, limiting the effects on its nuclear program.

Trump’s instincts might be right. Or the skeptics might be right. Both make plausible claims. Analysts will need more intelligence from more sources to make a confident judgment about the effects on Fordo and on Iran’s broader nuclear efforts. Even then, it is likely that they will disagree on the effects, because this requires making predictions.

News coverage of the attack on Fordo and White House claims of success.

Politicized intelligence

In a perfect world, policymakers and intelligence officials would wrestle with dueling assessments in good faith. Such a process would take place outside the political fray, giving both sides the opportunity to offer criticism without being accused of political mischief. In this idealized scenario, policymakers could use reasonable intelligence conclusions to inform their decision-making process. After all, there are a lot of decisions about Middle Eastern security left to be made.

But we are not in a perfect world, and hopes for a good faith debate seem hopelessly naïve. Already the battle lines are being drawn. Congressional Democrats are suspicious that the administration is being disingenuous about Iran. The White House, for its part, is going on the offensive. “The leaking of this alleged assessment is a clear attempt to demean President Trump,” Leavitt declared in a written statement, “and discredit the brave fighter pilots who conducted a perfectly executed mission.”

Relations between policymakers and their intelligence advisers are often contentious, and U.S. presidents have a long history of clashing with spy chiefs. But intelligence-policy relations today are in a particularly dismal state. Trump bears the most responsibility, given his repeated disparagement of intelligence officials. For example, he dismissed the congressional testimony on Iran from Director of National Intelligence Tulsi Gabbard: “I don’t care what she said.”

The problem goes deeper than the president, however. Intelligence-policy relations in a democracy are difficult because of the persuasive power of secret information. Policymakers fear that intelligence officials who control secrets might use them to undermine the policymakers’ plans. Intelligence officials worry that the policymakers will bully them into giving politically convenient answers. Such fears led to intelligence-policy breakdowns over estimates of enemy strength in the Vietnam War and estimates of Soviet missile capabilities in the early years of detente.

This mutual suspicion has become progressively worse since the end of the Cold War, as secret intelligence has become increasingly public. Intelligence leaders have become recognizable public figures, and intelligence judgments on current issues are often quickly declassified. The public now expects to have access to intelligence findings, and this has helped turn intelligence into a political football.

What lies ahead

What does all this mean for intelligence on Iran? Trump might ignore assessments he dislikes, given his history with intelligence. But the acrimonious public dispute over the Fordo strike may lead the White House to pressure intelligence leaders to toe the line, especially if critics demand a public accounting of secret intelligence.

Such an outcome would benefit nobody. The public would not have a better sense of the questions surrounding Iran’s nuclear effort, the intelligence community would suffer a serious blow to its reputation, and the administration’s efforts to use intelligence in public might backfire, as was the case for the George W. Bush administration after the war in Iraq.

As with military campaigns, episodes of politicizing intelligence have lasting and sometimes unforeseen consequences.

The Conversation

Joshua Rovner is associate professor of international relations at American University, and nonresident senior fellow at the Brookings Institution.

ref. What damage did the US do to Iran’s nuclear program? Why it’s so hard to know – https://theconversation.com/what-damage-did-the-us-do-to-irans-nuclear-program-why-its-so-hard-to-know-260058

Despite claims they’d move overseas after the election, most Americans are staying put

Source: The Conversation – USA – By Amanda Klekowski von Koppenfels, Honorary Reader in MIgration and Politics, University of Kent

Not that many people are preparing to leave the U.S. gerenme/E+ via Getty Images

Based on pronouncements in 2024, you might think now is the time to see U.S. citizens streaming out of the country. Months before the 2024 presidential election, Americans were saying they would leave should candidate Donald Trump win the election. Gallup polling in 2024 found that 21% of Americans wanted to leave the United States permanently, more than double the 10% who had said so in 2011.

And indeed in June 2025, a Vermont legislator announced that she was resigning her seat and moving to Canada because of political concerns and economic opportunities. To be sure, people are moving. Even so, as a scholar of American migration overseas, my research finds that the vast majority of Americans are not about to depart for greener shores.

A western Massachusetts group

In October 2024, I surveyed 68 Americans in western Massachusetts, an area with a slight Democratic majority, asking if they wanted to leave the United States for a lengthy period of time, but not necessarily permanently. Over 90% said no, noting that there were factors limiting their mobility, such as financial obligations or having a partner who would not move, and that there were reasons that made them want to stay, such as owning property and having friends nearby.

Just three respondents indicated they were making plans to move, while an additional 11 said they wanted to move “someday.”

Reality strikes

After the November 2024 election, I interviewed seven of those respondents, two of whom had said prior to the election that they might leave the United States. After the election, they all said they planned to stay.

One who had said she wanted to leave acknowledged her reversal, saying: “I may have flippantly said, ‘Oh, if (Trump) gets voted in … I would leave,’ but I can’t see leaving. Part of it is because of my daughter,” who had recently become a mother. She continued, “It’s never crossed my mind seriously enough to even research it.”

Another told me, “I’m not going to let somebody push me out of what I consider my country and my home because he’s a jerk.”

Others spoke of needing to work several more years in order to receive a pension, or having family responsibilities keeping them in the country. None supported the current administration.

On a national level

In two nationally representative surveys, my colleague Helen B. Marrow, a sociologist of immigration, and I found no significant increase in migration aspiration between 2014 and 2019. We also found that respondents mentioned exploration and adventure much more often than political or economic reasons for wanting to move abroad.

Even though the U.S. passport grants visa-free visitor access to more than 180 countries, U.S. citizens still need residence and work visas. At home, they, like others, have family commitments and financial constraints, or may just not want to leave home. More than 95% of the world’s population do not move abroad – and U.S. citizens are no different.

Relocation coaching

In addition to my academic research on overseas Americans, I am also an international relocation coach. I help Americans considering a move abroad navigate the emotional, practical and professional complexities of relocation, whether they’re just starting to explore the idea or actively planning their next steps.

Many of my clients do not want to live in a United States that no longer aligns with their values, while others are concerned about their safety, particularly, but not only, due to racism or homophobia. They are finding jobs overseas, retiring abroad or acquiring a European citizenship through a parent or grandparent. Most recently, American academics seeking to leave are being courted by European universities.

But most are staying

In February 2025, a national poll found that 4% of Americans said they were “definitely planning to move” to another country.

That same month, I followed up with my seven interviewees from western Massachusetts, including one trans man. They all reiterated their choice to remain in the United States. One person, who might move abroad at some point, told me she hadn’t changed her mind about leaving soon: “Leaving doesn’t necessarily mean anything will be better for me, even if it was a financial possibility.”

Two people said that recent political developments actually meant that they were more committed to remaining in the United States. One told me, “Now, more than ever, individuals need to figure out what small actions can be taken to help our fellow Americans get through this dark period.”

But even those “definitely planning on moving” can have other factors intervene. Two clients of mine who were making serious plans had to stop when family members’ health situations changed for the worse.

So how many people are actually leaving? It is clear that a growing number of Americans are considering a move abroad. But far fewer are conducting serious research, seeking professional consultation or actually moving. Drawing on available data, my own academic research and my coaching experience, my educated estimate is that no more than 1% to 2% of U.S. citizens are actively making viable plans to leave the country. Nor are all of those leaving out of protest; many are still motivated by exploration, adventure, employment or to be with a partner.

Even so, that figure is roughly 3 million to 6 million people – which would be a significant increase over the estimated 5.5 million Americans currently living abroad. As with many migration flows, even the movement of a small percentage of a population can still have the potential to reshape both the United States and its overseas population.

The Conversation

Amanda Klekowski von Koppenfels does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Despite claims they’d move overseas after the election, most Americans are staying put – https://theconversation.com/despite-claims-theyd-move-overseas-after-the-election-most-americans-are-staying-put-250728

The rule of law is key to capitalism − eroding it is bad news for American business

Source: The Conversation – USA (2) – By Robert Bird, Professor of Business Law & Eversource Energy Chair in Business Ethics, University of Connecticut

Something dangerous is happening to the U.S. economy, and it’s not inflation or trade wars. Chaotic deregulation and the selective enforcement of laws have upended markets and investor confidence. At one point, the threat of tariffs and resulting chaos evaporated US$4 trillion in value in the U.S. stock market. This approach isn’t helping the economy, and there are troubling signs it will hurt both the U.S. and the global economy in the short and long term.

The rule of law – the idea that legal rules apply to everyone equally, regardless of wealth or political connections − is essential for a thriving economy. Yet globally the respect for the rule of law is slipping, and the U.S. is slipping with it. According to annual rankings from the World Justice Project, the rule of law has declined in more than half of all countries for seven years in a row. The rule of law in the U.S., the most economically powerful nation in the world, is now weaker than the rule of law in Uruguay, Singapore, Latvia and over 20 other countries.

When regulation is unnecessarily burdensome for business, government should lighten the load. However, arbitrary and frenzied deregulation does not free corporations to earn higher profits. As a business school professor with an MBA who has taught business law for over 25 years, and the author of a recently published book about the importance of legal knowledge to business, I can affirm that the opposite is true. Chaotic deregulation doesn’t drive growth. It only fuels risk.

Chaos undermines investment, talent and trust

Legal uncertainty has become a serious drag on American competitiveness.

A study by the U.S. Chamber of Commerce found that public policy risks — such as unexpected changes in taxes, regulation and enforcement — ranked among the top challenges businesses face, alongside more familiar business threats such as competition or economic volatility. Companies that can’t predict how the law might change are forced to plan for the worst. That means holding back on long-term investment, slowing innovation and raising prices to cover new risks.

When the government enforces rules arbitrarily, it also undermines property rights.

For example, if a country enters into a major trade agreement and then goes ahead and violates it, that threatens the property rights of the companies that relied on the agreement to conduct business. If the government can seize assets without due process, those assets lose their stability and value. And if that treatment depends on whether a company is in the government’s political favor, it’s not just bad economics − it’s a red flag for investors.

When government doesn’t enforce rules fairly, it also threatens people’s freedom to enter into contracts.

Consider presidential orders that threaten the clients of law firms that have challenged the administration with cancellation of their government contracts. The threat alone jeopardizes the value of those agreements.

If businesses can’t trust public contracts to be respected, they’ll be less likely to work with the government in the first place. This deprives the government, and ultimately the American people, of receiving the best value for their tax dollars in critical areas such as transportation, technology and national defense.

Regulatory chaos also allows corruption to spread.

For example, the Foreign Corrupt Practices Act, which prohibits businesses from bribing foreign government officials, has leveled the playing field for firms and enabled the best American companies to succeed on their merits. Before the law was enacted in 1977, some American companies felt pressured to pay bribes to compete. “Pausing” enforcement of the law, as the current presidential administration has done, increases the cost of doing business and encourages a wild west economy where chaos thrives.

When corruption grows, stable and democratic governments weaken, opportunities for terrorism increase and corruption-fueled authoritarian regimes, which oppose the interests of the U.S., thrive. Halting the enforcement of an anti-bribery law, even for a limited time, is an issue of national security.

Legal uncertainty fuels brain drain

Chaotic enforcement of the law also corrodes labor markets.

American companies require a strong pool of talented professionals to fuel their financial success. When legal rights are enforced arbitrarily or unjustly, the very best talent that American companies need may leave the country.

The science brain drain is already happening. American scientists have submitted 32% more applications for jobs abroad compared with last year. Nonscientists are leaving too. Ireland’s Department of Foreign Affairs has witnessed a 50% increase in Americans taking steps to obtain an Irish passport. Employers in the U.K. saw a spike in job applications from the United States.

Business from other countries will gladly accept American talent as they compete against American companies. During the Third Reich, Nazi Germany lost its best and brightest to other countries, including America. Now the reverse is happening, as highly talented Americans leave to work for firms in other nations.

Threats of arbitrary legal actions also drive away democratic allies and their prosperous populations that purchase American-made goods and services. For example, arbitrarily threatening to punish or even annex a closely allied nation does not endear its citizens to that government or the businesses it represents. So it’s no surprise that Canadians are now boycotting American goods and services. This is devastating businesses in American border towns and hurts the economy nationwide.

Similarly, the Canadian government has responded to whipsawing U.S. tariff announcements with counter-tariffs, which will slice the profits of American exporters. Close American allies and trading partners such as Japan, the U.K. and the European Union are also signaling their own willingness to impose retaliatory tariffs, increasing the costs of operations to American business even more.

Modern capitalism depends on smart regulation to thrive. Smart regulation is not an obstacle to capitalism. Smart regulation is what makes American capitalism possible. Smart regulation is what makes American freedom possible.

Clear and consistently applied legal rules allow businesses to aggressively compete, carefully plan, and generate profits. An arbitrary rule of law deprives business of the true power of capitalism – the ability to promote economic growth, spur innovation and improve the overall living standards of a free society. Americans deserve no less, and it is up to government to make that happen for everyone.

The Conversation

Robert Bird does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. The rule of law is key to capitalism − eroding it is bad news for American business – https://theconversation.com/the-rule-of-law-is-key-to-capitalism-eroding-it-is-bad-news-for-american-business-254922

Legal wrangling over estate of Jimmy Buffett turns his widow’s huge inheritance into a cautionary tale

Source: The Conversation – USA (2) – By Reid Kress Weisbord, Distinguished Professor of Law and Judge Norma Shapiro Scholar, Rutgers University – Newark

Musician Jimmy Buffett and his wife, Jane Slagsvol, attend a Lincoln Center for the Performing Arts event in 2018 in New York. Evan Agostini/Invision via AP

Lawyers often tell their clients that everyone should have a will that clearly states who should inherit their assets after they die. But even having a will is not necessarily enough to avoid a costly and contentious legal dispute.

Consider what happened after Jimmy Buffett died of skin cancer at the age of 76 in 2023. The singer and entrepreneurial founder of the Margaritaville brand ordered in his will that his fortune be placed in a trust after his death. To manage the trust, Buffett named two co-trustees: his widow, Jane Slagsvol, and Richard Mozenter, an accountant who had served as the singer’s financial adviser for more than three decades.

In dueling petitions filed in Los Angeles and Palm Beach, Florida, in June 2025, however, Slagsvol – identified as Jane Buffett in her legal filing – and Mozenter are both seeking to remove each other as a trustee.

The outcome of this litigation will determine who gets to administer Buffett’s US$275 million estate.

As law professors who specialize in trusts and estates, we teach graduate courses about the transfer of property during life and at death. We believe that the Buffett dispute offers a valuable lesson for anyone with an estate, large or small. And choosing the right person to manage the assets you leave behind can be just as important as selecting who will inherit your property.

Buffett’s business empire

Buffett’s estate includes valuable intellectual property from his hit songs, including “It’s 5 O’Clock Somewhere,” “Oldest Surfer on the Beach” and “Cheeseburger in Paradise.” Buffett’s albums have sold more than 20 million copies worldwide and continue to generate some $20 million annually in royalties. Buffett also owned a yacht, real estate, airplanes, fancy watches and valuable securities.

In addition, he owned a 20% stake in Margaritaville Holdings LLC, a brand management company he and Slagsvol founded in the 1990s. Margaritaville owns 30 restaurants and 20 hotels, along with vacation clubs, casinos and cruise ships. It also sells branded merchandise.

According to Slagsvol’s petition, Buffett’s trust was set up to benefit his widow. Slagsvol, who married Buffett in 1977, is one of two trustees of that trust, which is required to have at least one “independent trustee” in addition to her “at all times.” That requirement is stated expressly in Buffett’s trust declaration.

Slagsvol receives all income earned by the trust – an estate-planning technique for giving away property managed by a trustee on behalf of the trust beneficiaries – for the rest of her life. She can also receive additional trust funds for her health care, living expenses and “any other purpose” that the independent trustee – Mozenter, as of July 2025 – deems to be in Slagsvol’s best interests.

The estate plan also created separate trusts for their three children: Savannah, Sarah “Delaney” and Cameron Buffett, who are in their 30s and 40s. Each child reportedly received $2 million upon Jimmy’s death. When Slagsvol dies, she can decide who will receive any remaining assets from among Buffett’s descendants and charities.

The structure of Buffett’s plan is popular among wealthy married couples. It provides lifelong support for the surviving spouse while ensuring that their kids and grandchildren can inherit the remainder of their estate – even if that spouse remarries. This type of trust typically cannot be changed by the surviving spouse without court approval.

Rear view of female caregiver walking with retired male on footpath.
If you’re fortunate enough to reach your golden years with a sizable nest egg, it helps your loved ones if you can draft a detailed will. You might also want to consider establishing a trust.
Maskot/Getty Images

Dueling trustee removal petitions

Slagsvol is trying to remove Mozenter as the trust’s independent trustee.

She claims he refused to comply with her requests for financial information, failed to cooperate with her as her co-trustee, and hired a trust attorney who pressured her to resign as trustee. Slagsvol also raised numerous questions about the trust’s income projections and compensation paid to Mozenter for his services.

Mozenter’s petition, filed in Florida, is not available to the public. According to media coverage of this dispute, he seeks to remove Slagsvol as trustee. He claims that, during his decades-long role as Buffett’s financial adviser, the musician “expressed concerns about his wife’s ability to manage and control his assets after his death.”

That led Buffett to establish a trust, Mozenter asserted, “in a manner that precluded Jane from having actual control” over it.

Estate planning lessons

We believe that the public can learn two important estate planning lessons from this dispute.

First, anyone planning to leave an estate, whether modest or vast, needs to choose the right people to manage the transfer of their property after their death.

That might mean picking a professional executor or trustee who is not related to you. A professional may be more likely to remain neutral should any disputes arise within the family, but hiring one can saddle the estate with costly fees.

An alternative is to choose a relative or trusted friend who is willing to do this for free. About 56% of wills name an adult child or grandchild as executor, according to a recent study. Some estates, like Buffett’s trust, name both a professional and a family member. An important consideration is whether the people asked to manage the estate will get along with each other – and with anyone else who is slated to inherit from the estate.

The second lesson is, whether you choose a professional, a loved one or a friend to manage your estate, make clear what circumstances would warrant their removal. Courts are reluctant to remove a handpicked trustee without proof of negligence, fraud or disloyalty. But trustees can be removed when a breakdown in cooperation interferes with their ability to administer the estate or trust.

Some trusts anticipate such conflicts by allowing beneficiaries to replace a professional trustee with another professional trustee. That can resolve some disputes while avoiding the cost of seeking court approval.

Preventing disputes from erupting in the first place can help people avert the costly and embarrassing kind of litigation now ensnaring Jimmy Buffett’s estate.

The Conversation

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

ref. Legal wrangling over estate of Jimmy Buffett turns his widow’s huge inheritance into a cautionary tale – https://theconversation.com/legal-wrangling-over-estate-of-jimmy-buffett-turns-his-widows-huge-inheritance-into-a-cautionary-tale-259116

Philadelphia’s $2B affordable housing plan relies heavily on municipal bonds, which can come with hidden costs for taxpayers

Source: The Conversation – USA (2) – By Jade Craig, Assistant Professor of Law, University of Mississippi

The Parker administration says it will issue $800 million in bonds over the next four years to fund affordable housing. Jeff Fusco/The Conversation, CC BY-NC-SA

Philadelphia Mayor Cherelle Parker’s Housing Opportunities Made Easy initiative, which was included in the city budget passed June 12, 2025, is an ambitious effort to address the city’s affordable housing challenges.

Parker has promised to create or preserve 30,000 affordable housing units throughout the city, at a cost of roughly US$2 billion.

To help fund the plan, the Parker administration says it will issue $800 million in housing bonds over the next three years.

In an April 2025 report on the housing plan, the Parker administration admits that, in light of declining federal investment in affordable housing, proceeds from municipal bonds issued by the local government “have taken on an outsized role” in Philadelphia’s housing programs.

Often, only city treasurers and the finance committees of city councils pay attention to the details behind these municipal bonds.

As a law professor who studies the social impact of municipal bonds, I believe it’s important that city residents understand how these bonds work as well.

While municipal bonds are integral to the city’s effort to increase access to affordable and market-rate housing, they can include hidden costs and requirements that raise prices in ways that make city services unaffordable for lower-income residents.

New construction housing in urban area on sunny day
The Parker administration has vowed to create or preserve 30,000 affordable housing units in Philly through new construction, rehabilitation and expanded rental assistance.
Jeff Fusco/The Conversation, CC BY-SA

How municipal bonds work

Most people are aware that companies sell shares on the stock market to raise capital. State and local governments do the same thing in the form of municipal bonds, which help them raise money to cover their expenses and to finance infrastructure projects.

These bonds are a form of debt. Investors can purchase an interest in the bond and, in exchange, the local government promises to pay the money back with interest in a specified time period. The money from investors functions like a loan to the government.

Municipal bonds are often used so that one generation of taxpayers is not having to bear the full cost of a project that will benefit multiple generations of residents. The cost of building a bridge, for example, which will be in use for decades, can be spread out over 30 years so that residents pay back the loan slowly over time rather than saddle residents with huge tax increases one year to cover the cost.

However, the cost of borrowing pushes up the cost of projects by adding interest payments the same way a mortgage adds to the overall cost of buying a house. Overall, the market and state and local governments have historically viewed this cost as a worthy trade-off.

Some municipal bonds have limits

The Parker administration has several options when it comes to raising capital on the municipal market.

The most common method is through general obligation bonds, which are backed by the city’s authority to impose and collect taxes. Bondholders rely on the city’s “full faith and credit” to assure them that if the city has difficulty paying back the debt, the city will raise taxes on residents to secure the payment.

The city plans to use general obligation bonds to help fund its affordable housing plan, but there are limits on how much it can borrow this way. The state constitution limits Philadelphia’s ability to incur debt to a total of 13.5% of the value of its assessed taxable real estate, based on an average of this amount for the preceding 10 years.

Block of colorful row homes on sunny day
Philadelphia is more affordable than several other big U.S. cities, according to a 2020 report from the Pew Charitable Trusts, but it has a high poverty rate.
Jeff Fusco/The Conversation, CC BY-SA

Philly has another option

The city, however, also has the authority to take on another form of debt: revenue bonds. Revenue bonds rely on specific sources of revenue instead of the government’s taxing power. Jurisdictions issue revenue bonds to fund particular projects or services – usually ones that generate income from fees paid by users.

For example, a publicly owned water utility or electric company relies on water and sewage fees or electricity rates and charges to pay back their revenue bonds. Likewise, a transportation authority will rely on tolls to pay back revenue bonds issued to build a toll road, such as the Pennsylvania Turnpike.

Under state law, revenue bonds are “non-debt debts.” They are not debts owed by the city, because the city has not promised to repay the debt through the use of its own taxing powers. Instead, the people who pay the fees to use the service are paying back the debt.

Since states began to place stricter limits on debt in the wake of the Great Depression in the 1930s, cities across the U.S. have increasingly used revenue bonds to get around state debt limits and still fund valuable public services, including affordable housing projects.

When another government entity – rather than the city – issues the bond, and the city pays them a service fee for doing so, it’s a form of what’s called conduit debt. That obligation to pay the service fee to the other government entity is the conduit debt that the city pays out of its general fund.

In Philadelphia, conduit debt includes revenue bonds issued by the Philadelphia Authority for Industrial Development and Philadelphia Redevelopment Authority.

From fiscal years 2012 to 2021, the city’s outstanding debt from general obligation bonds paid for out of its general fund was between $1.3 billion to $1.7 billion per year. However, the city’s conduit debt outstripped that number every year, ranging from $1.8 billion to nearly $2.3 billion. In more recent years, conduit debt has been less than the city’s debt from general obligation bonds.

The city keeps conduit debt on its books – and is obligated to pay it back – even though it comes from bonds issued by the development authorities, because these debts loop back to the city. In the bonds issued by these agencies, the city actually becomes like a client of the agency. The city is typically obligated to pay the agency service fees as part of a contractual obligation that cannot be canceled.

The revenue on which the development agencies’ bonds rely, the money from which bondholders expect to be paid back, does not come from fees that residents pay out of their own pocket – for example through ticket sales from a sports stadium built with revenue bonds. The money instead comes out of the city’s treasury.

A loophole to affordable housing

Essentially this is a loophole for the city to bypass debt limits set for Philadelphia in the state constitution. Sometimes creativity in government requires using loopholes to get the job done – to get to yes instead of a stalemate.

Consider this analogy. Say your sister takes out a bank loan to buy a car for you because your credit limit is maxed out. She is relying on you to pay her back, and she uses your payment to pay the bank. But if you don’t pay her back, she’s not responsible by law for paying the bank herself. So, it’s your debt, but she is the conduit.

If the city holds itself accountable, it can use conduit debt responsibly to make affordable housing construction a reality.

The mayor’s office did not respond to my questions about whether they plan to use conduit debt issued by a development authority, whether that conduit debt would include service fees, and what funds would be used to pay those fees.

In its quest to increase access to affordable housing, the Parker administration should, in my view, be mindful of limiting the service fees it agrees to pay – which have no legally prescribed limits – and also account for where it will find income to cover these costs. For example, will it come from the sale of city-owned land? Fees charged to developers? Or some other source?

Otherwise, taxpayers may be left to foot a bill that is essentially unlimited.

Read more of our stories about Philadelphia.

The Conversation

Jade Craig does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Philadelphia’s $2B affordable housing plan relies heavily on municipal bonds, which can come with hidden costs for taxpayers – https://theconversation.com/philadelphias-2b-affordable-housing-plan-relies-heavily-on-municipal-bonds-which-can-come-with-hidden-costs-for-taxpayers-253522

The Supreme Court upholds free preventive care, but its future now rests in RFK Jr.’s hands

Source: The Conversation – USA (3) – By Paul Shafer, Associate Professor of Health Law, Policy and Management, Boston University

The Affordable Care Act has survived its fourth Supreme Court challenge. Ted Eytan via Wikimedia Commons, CC BY

On June 26, 2025, the U.S. Supreme Court handed down a 6-3 ruling that preserves free preventive care under the Affordable Care Act, a popular benefit that helps approximately 150 million Americans stay healthy.

The case, Kennedy v. Braidwood, was the fourth major legal challenge to the Affordable Care Act. The decision, written by Justice Brett Kavanaugh with the support of Justices Amy Coney Barrett, Elena Kagan, Ketanji Brown Jackson and Sonia Sotomayor, ruled that insurers must continue to cover at no cost any preventive care approved by a federal panel called the U.S. Preventive Services Task Force.

Members of the task force are independent scientific experts, appointed for four-year terms. The panel’s role had been purely advisory until the ACA, and the plaintiffs contended that the members lacked the appropriate authority as they had not been appointed by the President and confirmed by the Senate. The Supreme Court rejected this argument, saying that members simply needed to be appointed by the Health and Human Services Secretary – currently, Robert F. Kennedy Jr. – which they had been, under his predecessor during the Biden administration.

This ruling seemingly safeguards access to preventive care. But as public health researchers who study health insurance and sexual health, we see another concern: It leaves preventive care vulnerable to how Kennedy and future HHS secretaries will choose to exercise their power over the task force and its recommendations.

What is the US Preventive Services Task Force?

The U.S. Preventive Services Task Force was initially created in 1984 to develop recommendations about prevention for primary care doctors. It is modeled after the Canadian Task Force on Preventive Health Care, which was established in 1976.

Female doctor with long hair, white coat and stethoscope examines a young child sitting on an exam table, while an adult stands behind the child.
Under the ACA, insurers must fully cover all screenings and interventions endorsed by the U.S. Preventive Services Task Force.
SDI Productions/E+ via Getty Images

The task force makes new recommendations and updates existing ones by reviewing clinical and policy evidence on a regular basis and weighing the potential benefits and risks of a wide range of health screenings and interventions. These include mammograms; blood pressure, colon cancer, diabetes and osteoporosis screenings; and HIV prevention. Over 150 million Americans have benefited from free coverage of these recommended services under the ACA, and around 60% of privately insured people use at least one of the covered services each year.

The task force plays such a crucial role in health care because it is one of three federal groups whose recommendations insurers must abide by. Section 2713 of the Affordable Care Act requires insurers to offer full coverage of preventive services endorsed by three federal groups: the U.S. Preventive Services Task Force, the Advisory Committee on Immunization Practices, and the Health Resources and Services Administration. For example, the coronavirus relief bill, which passed in March 2020 and allocated emergency funding in response to the COVID-19 pandemic, used this provision to ensure COVID-19 vaccines would be free for many Americans.

The Braidwood case and HIV prevention

This case, originally filed in Texas in 2020, was brought by Braidwood Management, a Christian for-profit corporation owned by Steven Hotze, a Texas physician and Republican activist who has previously filed multiple lawsuits against the ACA. Braidwood and its co-plaintiffs argued on religious grounds against being forced to offer preexposure prophylaxis, or PrEP, a medicine that prevents HIV infection, in their insurance plans.

At issue in Braidwood was whether task force members – providers and researchers who provide independent and nonpartisan expertise – were appropriately appointed and supervised under the appointments clause of the Constitution, which specifies how various government positions are appointed. The case called into question free coverage of all recommendations made by the task force since the Affordable Care Act was passed in March 2010.

In the ruling, Kavanaugh wrote that “the Task Force members’ appointments are fully consistent with the Appointments Clause in Article II of the Constitution.” In laying out his reasoning, he wrote, “The Task Force members were appointed by and are supervised and directed by the Secretary of HHS. And the Secretary of HHS, in turn, answers to the President of the United States.”

Concerns over political influence

The U.S. Preventive Services Task Force is meant to operate independently of political influence, and its decisions are technically not directly reviewable. However, the task force is appointed by the HHS secretary, who may remove any of its members at any time for any reason, even if such actions are highly unusual.

Kennedy recently took the unprecedented step of removing all members of the Advisory Committee on Immunization Practices, which debates vaccine safety but also, crucially, helps decide what immunizations are free to Americans guaranteed by the Affordable Care Act. The newly constituted committee, appointed in weeks rather than years, includes several vaccine skeptics and has already moved to rescind some vaccine recommendations, such as routine COVID-19 vaccines for pregnant women and children.

Kennedy has also proposed restructuring out of existence the agency that supports the task force, the Agency for Healthcare Research and Quality. That agency has been subject to massive layoffs within the Department of Health and Human Services. For full disclosure, one of the authors is currently funded by the Agency for Healthcare Research and Quality and previously worked there.

The decision to safeguard the U.S. Preventive Services Task Force as a body and, by extension, free preventive care under the ACA, doesn’t come without risks and highlights the fragility of long-standing, independent advisory systems in the face of the politicization of health. Kennedy could simply remove the existing task force members and replace them with members who may reshape the types of care recommended to Americans by their doctors and insurance plans based on debunked science and misinformation.

Partisanship and the politicization of health threaten trust in evidence. Already, signs are emerging that Americans on both side of the political divide are losing confidence in government health agencies. This ruling preserves a crucial part of the Affordable Care Act, yet federal health guidelines and access to lifesaving care could still swing dramatically in Kennedy’s hands – or with each subsequent transition of power.

Portions of this article originally appeared in previous articles published on Sept. 7, 2021; Dec. 1, 2021; Sept. 13, 2022; April 7, 2023; and April 15, 2025.

The Conversation

Paul Shafer receives research funding from the National Institutes of Health, Agency for Healthcare Research and Quality, and Department of Veterans Affairs. The views expressed in this article are those of the authors and do not necessarily reflect the position or policy of these agencies or the United States government.

Kristefer Stojanovski receives funding from the Robert Wood Johnson Foundation. The views expressed in this article are those of the authors and do not necessarily reflect the position or policy of these agencies or the United States government.

ref. The Supreme Court upholds free preventive care, but its future now rests in RFK Jr.’s hands – https://theconversation.com/the-supreme-court-upholds-free-preventive-care-but-its-future-now-rests-in-rfk-jr-s-hands-260072

AI is advancing even faster than sci-fi visionaries like Neal Stephenson imagined

Source: The Conversation – USA (2) – By Rizwan Virk, Faculty Associate, PhD Candidate in Human and Social Dimensions of Science and Technology, Arizona State University

In Stephenson’s novel ‘The Diamond Age,’ a device called the Young Lady’s Illustrated Primer offers emotional, social and intellectual support. Christopher Michel/Wikimedia Commons, CC BY-SA

Every time I read about another advance in AI technology, I feel like another figment of science fiction moves closer to reality.

Lately, I’ve been noticing eerie parallels to Neal Stephenson’s 1995 novel “The Diamond Age: Or, A Young Lady’s Illustrated Primer.”

“The Diamond Age” depicted a post-cyberpunk sectarian future, in which society is fragmented into tribes, called phyles. In this future world, sophisticated nanotechnology is ubiquitous, and a new type of AI is introduced.

Though inspired by MIT nanotech pioneer Eric Drexler and Nobel Prize winner Richard Feynman, the advanced nanotechnology depicted in the novel still remains out of reach. However, the AI that’s portrayed, particularly a teaching device called the Young Lady’s Illustrated Primer, isn’t only right in front of us; it also raises serious issues about the role of AI in labor, learning and human behavior.

In Stephenson’s novel, the Primer looks like a hardcover book, but each of its “pages” is really a screen display that can show animations and text, and it responds to its user in real time via AI. The book also has an audio component, which voices the characters and narrates stories being told by the device.

It was originally created for the young daughter of an aristocrat, but it accidentally falls into the hands of a girl named Nell who’s living on the streets of a futuristic Shanghai. The Primer provides Nell personalized emotional, social and intellectual support during her journey to adulthood, serving alternatively as an AI companion, a storyteller, a teacher and a surrogate parent.

The AI is able to weave fairy tales that help a younger Nell cope with past traumas, such as her abusive home and life on the streets. It educates her on everything from math to cryptography to martial arts. In a techno-futuristic homage to George Bernard Shaw’s 1913 play “Pygmalion,” the Primer goes so far as to teach Nell the proper social etiquette to be able to blend into neo-Victorian society, one of the prominent tribes in Stephenson’s balkanized world.

No need for ‘ractors’

Three recent developments in AI – in video games, wearable technology and education – reveal that building something like the Primer should no longer be considered the purview of science fiction.

In May 2025, the hit video game “Fortnite” introduced an AI version of Darth Vader, who speaks with the voice of the late James Earl Jones.

Older Black man wearing suit jacket poses on red carpet next to sinister-looking, costumed person wearing a black mask and black cape.
The estate of James Earl Jones gave Epic Games permission to use the late actor’s voice for an AI Darth Vader.
Jim Spellman/WireImage via Getty Images

While it was popular among fans of the game, the Screen Actors Guild lodged a labor complaint with Epic Games, the creator of “Fortnite.” Even though Epic had received permission from the late actor’s estate, the Screen Actors Guild pointed out that actors could have been hired to voice the character, and the company – in refusing to alert the union and negotiate terms – violated existing labor agreements.

In “The Diamond Age,” while the Primer uses AI to generate the fairy tales that train Nell, for the voices of these archetypal characters, Stephenson concocted a low-tech solution: The characters are played by a network of what he termed “ractors” – real actors working in a studio who are contracted to perform and interact in real time with users.

The Darth Vader “Fortnite” character shows that a Primer built today wouldn’t need to use actors at all. It could rely almost entirely on AI voice generation and have real-time conversations, showing that today’s technology already exceeds Stephenson’s normally far-sighted vision.

Recording and guiding in real time

Synthesizing James Earl Jones’ voice in “Fortnite” wasn’t the only recent AI development heralding the arrival of Primer-like technology.

I recently witnessed a demonstration of wearable AI that records all of the wearer’s conversations. Their words are then sent to a server so they can be analyzed by AI, providing both summaries and suggestions to the user about future behavior.

Several startups are making these “always on” AI wearables. In an April 29, 2025, essay titled “I Recorded Everything I Said for Three Months. AI Has Replaced My Memory,” Wall Street Journal technology columnist Joanna Stern describes the experience of using this technology. She concedes that the assistants created useful summaries of her conversations and meetings, along with helpful to-do lists. However, they also recalled “every dumb, private and cringeworthy thing that came out of my mouth.”

AI wearable devices that continuously record the conversations of their users have recently hit the market.

These devices also create privacy issues. The people whom the user interacts with don’t always know they are being recorded, even as their words are also sent to a server for the AI to process them. To Stern, the technology’s potential for mass surveillance becomes readily apparent, presenting a “slightly terrifying glimpse of the future.”

Relying on AI engines such as ChatGPT, Claude and Google’s Gemini, the wearables work only with words, not images. Behavioral suggestions occur only after the fact. However, a key function of the Primer – coaching users in real time in the middle of any situation or social interaction – is the next logical step as the technology advances.

Education or social engineering?

In “The Diamond Age,” the Primer doesn’t simply weave interactive fairy tales for Nell. It also assumes the responsibility of educating her on everything from her ABCs when younger to the intricacies of cryptography and politics as she gets older.

It’s no secret that AI tools, such as ChatGPT, are now being widely used by both teachers and students.

Several recent studies have shown that AI may be more effective than humans at teaching computer science. One survey found that 85% of students said ChatGPT was more effective than a human tutor. And at least one college, Morehouse College in Atlanta, is introducing an AI teaching assistant for professors.

There are certainly advantages to AI tutors: Tutoring and college tuition can be exorbitantly expensive, and the technology can offer better access to education to people of all income levels.

Pulling together these latest AI advances – interactive avatars, behavioral guides, tutors – it’s easy to envision how an AI device like the Young Lady’s Illustrated Primer could be created in the near future. A young person might have a personalized AI character that accompanies them at all times. It can teach them about the world and offer up suggestions for how to act in certain situations. The AI could be tailored to a child’s personality, concocting stories that include AI versions of their favorite TV and movie characters.

But “The Diamond Age” offers a warning, too.

Toward the end of the novel, a version of the Primer is handed out to hundreds of thousands of young Chinese girls who, like Nell, didn’t have access to education or mentors. This leads to the education of the masses. But it also opens the door to large-scale social engineering, creating an army of Primer-raised martial arts experts, whom the AI then directs to act on behalf of “Princess Nell,” Nell’s fairy tale name.

It’s easy to see how this sort of large-scale social engineering could be used to target certain ideologies, crush dissent or build loyalty to a particular regime. The AI’s behavior could also be subject to the whims of the companies or individuals that created it. A ubiquitous, always-on, friendly AI could become the ultimate monitoring and reporting device. Think of a kinder, gentler face for Big Brother that people have trusted since childhood.

While large-scale deployment of a Primer-like AI could certainly make young people smarter and more efficient, it could also hamper one of the most important parts of education: teaching people to think for themselves.

The Conversation

Rizwan Virk owns shares of investments funds which own stock in various private AI companies such as Open AI and X.ai. He owns public stock in Google and Microsoft. Virk has family members who work for a wearable AI company.

ref. AI is advancing even faster than sci-fi visionaries like Neal Stephenson imagined – https://theconversation.com/ai-is-advancing-even-faster-than-sci-fi-visionaries-like-neal-stephenson-imagined-257509

Bali to Biarritz: Surf spot overcrowding and the fight to protect the essence of catching a wave

Source: The Conversation – France – By Jérémy Lemarié, Maître de conférences à l’Université de Reims Champagne-Ardenne, Université de Reims Champagne-Ardenne (URCA)

Invented in Hawaii, surfing gained popularity in the United States and Australia in the 1950s before becoming a global phenomenon. Now practiced in more than 150 countries, its spread has been driven by media and tourism. Surf tourism involves travelling to destinations to catch waves, either with a surfboard or through activities such as body surfing or bodyboarding. Tourists range from seasoned surfers to beginners eager to learn.

The allure of California

For many, surf tourism evokes exotic imagery shaped by California production companies. Columbia Pictures in 1959 and Paramount Pictures in 1961 introduced surfing to the middle class, showcasing the sport as a gateway to summer adventure and escape. However, it was the 1966 movie The Endless Summer, directed and produced by Bruce Brown, that became a box office success. The film follows two Californians travelling the globe in search of the perfect wave, which they ultimately find in South Africa. Beneath the seemingly lighthearted portrayal of a “surf safari”, it carries undertones of colonial ambition.

In the film, the Californians tell people in Africa that waves are untapped resources ready to be named and conquered. This sense of Western cultural dominance over populations in poorer countries has permeated surf tourism. Since the 1970s, French surfers have flocked to Morocco for its long-breaking waves, Australians have flocked to Indonesia and Californians to Mexico. The expansion of surfing to Africa, Asia and Latin America was enabled by easier international travel and economic disparities between visitors and hosts.

Surfing’s impact on local communities

Indonesia, for instance, became a surfing hotspot after Australian surfers started to explore the waves of Bali and the Mentawai Islands in the 1970s. Once remote regions with modest living standards, these areas saw tourism infrastructure mushroom to meet demand. Today, destinations such as Uluwatu in Bali and Padang Padang in Sumatra attract surfers of all skill levels.

Similarly, Morocco has experienced a surge in surf tourism, with spots such as Taghazout drawing European visitors in search of affordable waves and sunshine. While this has boosted local economies, it has also raised concerns about environmental degradation and the strain of tourism on previously untouched areas.

The challenges of overtourism in coastal areas

Although surfing is often seen as an activity in harmony with nature, mass tourism has created tensions between local surfers and visitors. Overtourism refers to the negative impact of excessive tourist numbers on natural environments and local communities.

One response to overtourism is localism – where local surfers assert ownership of waves, sometimes discouraging or even intimidating outsiders. This has been particularly pronounced in economically dependent surf destinations. For example, in Hawaii during the 1970s and 1980s, local surfers protested against the influx of professional Australian surfers and international competitions. Today, localism persists globally, from Maroubra in Sydney to Boucau-Tarnos in France’s Nouvelle-Aquitaine region. These places are not systematically off-limits to beginners, but major conflicts can arise during peak tourist seasons.

Surf schools, while crucial for teaching newcomers, also exacerbate crowding. During high seasons, beaches such as Côte des Basques in Biarritz become overcrowded, straining relations between experienced surfers, instructors and novices. Beginners, often unaware of surf etiquette and safety rules, contribute to frustrations among seasoned surfers.

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The role of public authorities

In response to these challenges, public initiatives have emerged to promote sustainable surf tourism. For instance, the Costa Rican government has established marine protected areas and regulated tourism activities to preserve a part of the coastal environment. Local authorities have also begun capping the number of surf schools and making access to the practice more difficult.

In southwestern France, municipalities use public service delegations (DSP), temporary occupation authorisations (AOT) and other tools to regulate surf schools operating on public beaches. Environmental awareness programmes have been launched to educate tourists on responsible behaviour toward beaches and oceans.

Gaps in regulation

Despite these measures, many coastal regions face insufficient action to address the environmental and social challenges posed by surf tourism. In Fiji, a 2010 decree deregulated the surf tourism industry, eliminating traditional indigenous rights to coastal and reef areas. This allowed unregulated development of tourism infrastructure, often ignoring long-term ecological impacts.

Similar issues are seen in Morocco, where lax regulations allow foreign investors to exploit coastal land for hotel development, often providing little benefit to local communities.

Yet, there are success stories. In Santa Cruz, California, the initiative Save Our Shores mobilises citizens and tourists to protect beaches through anti-pollution campaigns and regular cleanups.

Surf tourism has brought significant economic benefits to many coastal regions. However, it has also introduced social and environmental challenges, including localism, overcrowding and ecological strain. Managing these issues requires a collaborative approach, with governments, local stakeholders and tourists working together to preserve the sport’s connection to nature.


This article was published as part of the 2024 Fête de la Science, of which The Conversation France was a partner. The year’s theme, “Oceans of Knowledge,” explored the wonders of the marine world.

The Conversation

Jérémy Lemarié is a member of the Fulbright network, as the recipient of the “Chercheuses et Chercheurs” grant from the Franco-American Commission in 2022-2023.

ref. Bali to Biarritz: Surf spot overcrowding and the fight to protect the essence of catching a wave – https://theconversation.com/bali-to-biarritz-surf-spot-overcrowding-and-the-fight-to-protect-the-essence-of-catching-a-wave-244550

Our memories are unreliable, limited and suggestible – and it’s a good thing too

Source: The Conversation – Global Perspectives – By Nick Haslam, Professor of Psychology, The University of Melbourne

Shutterstock

Milan Kundera opens his novel The Book of Laughter and Forgetting with a scene from the winter of 1948. Klement Gottwald, leader of the Communist Party of Czechoslovakia, is giving a speech to the masses from a palace balcony, surrounded by fellow party members. Comrade Vladimir Clementis thoughtfully places his fur hat on Gottwald’s bare head; the hat then features in an iconic photograph.

Four years later, Clementis is found guilty of being a bourgeois nationalist and hanged. His ashes are strewn on a Prague street. The propaganda section of the party removes him from written history and erases him from the photograph.

“Nothing remains of Clementis,” writes Kundera, “but the fur hat on Gottwald’s head.”


Review: Memory Lane: The Perfectly Imperfect Ways We Remember – Ciara Greene & Gillian Murphy (Princeton University Press)


Efforts to enforce political forgetting are often associated with totalitarian regimes. The state endeavours to control not only its citizens, but also the past. To create a narrative that glorifies the present and idealises the future, history must be rewritten or even completely obliterated.

In a famous article on “the totalitarian ego”, the social psychologist Anthony Greenwald argued that individual selves operate in the same way. We deploy an array of cognitive biases to maintain a sense of control, and to shape and reshape our personal history. We distort the present and fabricate the past to ensure we remain the heroes of our life narratives.

Likening the individual to a destructive political system might sound extreme, but it has an element of truth. Memory Lane, a new book by Irish psychology researchers Ciara Greene and Gillian Murphy, shows how autobiographical memory has a capacity to rewrite history that is almost Stalinesque.

There is no shortage of books on memory, from self-help guides for the anxiously ageing to scholarly works of history. Memory Lane is distinctive for taking the standpoint of applied cognitive psychology. Emphasising how memory functions in everyday life, Greene and Murphy explore the processes of memory and the influences that shape them.

What memory is not

The key message of the book is that the memory system is not a recording device. We may be tempted to see memory as a vault where past experience is faithfully preserved, but in fact it is fundamentally reconstructive.

Memories are constantly revised in acts of recollection. They change in predictable ways over time, moulded by new information, our prior beliefs and current emotions, other people’s versions of events, or an interviewer’s leading questions.

According to Greene and Murphy’s preferred analogy, memory is like a Lego tower. A memory is initially constructed from a set of elements, but over time some will be lost as the structure simplifies to preserve the gist of the event. Elements may also be added as new information is incorporated and the memory is refashioned to align with the person’s beliefs and expectations.

The malleability of memory might look like a weakness, especially by comparison to digital records. Memory Lane presents it as a strength. Humans did not evolve to log objective truths for posterity, but to operate flexibly in a complex and changing world.

From an adaptive standpoint, the past only matters insofar as it helps us function in the present. Our knowledge should be updated by new information. We should assimilate experiences to already learned patterns. And we should be tuned to our social environment, rather than insulated from it.

“If all our memories existed in some kind of mental quarantine, separate from the rest of our knowledge and experiences,” the authors write, “it would be like using a slow, inefficient computer program that could only show you one file at a time, never drawing connections or updating incorrect impressions.”

Simplifying and discarding memories is also beneficial because our cognitive capacity is limited. It is better to filter out what matters from the deluge of past experiences than to be overwhelmed with irrelevancies. Greene and Murphy present the case of a woman with exceptional autobiographical memory, who is plagued by the triggering of obsolete memories.

Forgetting doesn’t merely de-clutter memory; it also serves emotional ends. Selectively deleting unpleasant memories increases happiness. Sanding off out-of-character experiences fosters a clear and stable sense of self.

“Hindsight bias” boosts this feeling of personal continuity by bringing our recollections into line with our current beliefs. Revisionist history it may be, but it is carried out in the service of personal identity.

‘Forgetting doesn’t merely de-clutter memory; it also serves emotional ends.’
Shutterstock

Eyewitness memories and misinformation

Memory Lane pays special attention to situations in which memory errors have serious consequences, such as eyewitness testimony. Innocent people can be convicted on the basis of inaccurate eyewitness identifications. An array of biases make these more likely and they are especially common in interracial contexts.

Recollections can also be influenced by the testimony of other witnesses, and even by the language used during questioning. In a classic study, participants who viewed videos of car accidents estimated the car’s speed as substantially faster when the cars were described as having “smashed” rather than “contacted”. These distortions are not temporary: new information overwrites and overrides the original memory.

Misinformation works in a similar way and with equally dire consequences, such as vaccination avoidance. False information not only modifies existing memories but can even produce false memories, especially when it aligns with our preexisting beliefs and ideologies.

Greene and Murphy present intriguing experimental evidence that false memories are prevalent and easy to implant. Children and older adults seem especially susceptible to misinformation, but no one is immune, regardless of education or intelligence.

Reassuringly, perhaps, digital image manipulation and deepfake videos are no more likely to induce false memories than good old-fashioned verbiage. A doctored picture may not be worth a thousand words when it comes to warping memory.

Memory Lane devotes some time to the “memory wars” of the 1980s and 1990s, when debate raged over the existence of repressed memories. Greene and Murphy argue the now mainstream view that many traumatic memories supposedly recovered in therapy were false memories induced by therapists. Memories for traumatic events are not repressed, they argue, and traumatic memories are neither qualitatively different from other memories, nor stored separately from them.

Here the science of memory runs contrary to the wildly popular claims of writers such as psychiatrist Bessel van der Kolk, author of the bestseller The Body Keeps the Score.




Read more:
The Body Keeps the Score: how a bestselling book helps us understand trauma – but inflates the definition of it


Psychology researchers Ciara Greene (left) and Gillian Murphy (right) want us to be humbler about our fallible memories.
Princeton University Press

Misunderstanding memory

The authors of Memory Lane contend that we hold memory to unrealistic standards of accuracy, completeness and stability. When people misremember the past or change their recollections, we query their honesty or mental health. When our own memories are hazy, we worry about cognitive decline.

Greene and Murphy argue that it is in the very nature of memory to be fallible, malleable and limited. This message is heartening, but it does not clarify why we would expect memory to be more capacious, coherent and durable in the first place. Nor does it explain why we persist with this wrongheaded expectation, despite so much evidence to the contrary.

The authors hint that our mistake might have its roots in dominant metaphors of memory. If we now understand the mind as computer-like, we will see memories as digital traces that sit, silent and unchanging, in a vast storage system.

“Many of the catastrophic consequences of memory distortion arise not because our individual memories are terrible,” they argue, “but because we have unrealistic expectations about how memory works, treating it as a video camera rather than a reconstruction.”

In earlier times, when memory was likened to a telephone switchboard or to books or, for the ancient Greeks, to wax tablets, memory errors and erasures may have seemed less surprising and more tolerable.

These shifting technological analogies, explored historically in Douwe Draaisma’s Metaphors of Memory, may partly account for our extravagant expectations for memory. Expecting silicon chip performance from carbon-based organisms, who evolved to care more about adaptation than truth, would be foolish.

But there is surely more to this than metaphor. All aspects of our lives are increasingly recorded and datafied, a process that demands objectivity, accuracy and consistency. The recorded facts of the matter determine who should be rewarded, punished and regulated. The bounded and mutable nature of human memory presents a challenge to this digital regime.

Human memory is also increasingly taxed by the overwhelming and accelerating volume of information that assails us. Our frustration with its limitations reflects the desperate mismatch we feel between human nature and the impersonal systems of data in which we live.

Greene and Murphy urge us to relax. We should be humbler about our memory, and more realistic and forgiving about the memories of others. We should not be judgemental about the errors and inconsistencies of friends, or overconfident about our own recollections. And we should remember that, although memory is fallible, it is fallible in beneficial ways.

A person whose memory system always kept an accurate record of our lives would be profoundly impaired, Greene and Murphy argue. Such a person “would struggle to plan for the future, learn from the past, or respond flexibly to unexpected events”. Brimming with insights such as these, Memory Lane offers an informative and readable account of how the apparent weaknesses of human memory may be strengths in disguise.

The Conversation

Nick Haslam receives funding from the Australian Research Council.

ref. Our memories are unreliable, limited and suggestible – and it’s a good thing too – https://theconversation.com/our-memories-are-unreliable-limited-and-suggestible-and-its-a-good-thing-too-258682

What did ancient Rome smell like? Honestly, often pretty rank

Source: The Conversation – Global Perspectives – By Thomas J. Derrick, Gale Research Fellow in Ancient Glass and Material Culture, Macquarie University

minoandriani/Getty Images

The roar of the arena crowd, the bustle of the Roman forum, the grand temples, the Roman army in red with glistening shields and armour – when people imagine ancient Rome, they often think of its sights and sounds. We know less, however, about the scents of ancient Rome.

We cannot, of course, go back and sniff to find out. But the literary texts, physical remains of structures, objects, and environmental evidence (such as plants and animals) can offer clues.

So what might ancient Rome have smelled like?

Honestly, often pretty rank

In describing the smells of plants, author and naturalist Pliny the Elder uses words such as iucundus (agreeable), acutus (pungent), vis (strong), or dilutus (weak).

None of that language is particularly evocative in its power to transport us back in time, unfortunately.

But we can probably safely assume that, in many areas, Rome was likely pretty dirty and rank-smelling. Property owners did not commonly connect their toilets to the sewers in large Roman towns and cities – perhaps fearing rodent incursions or odours.

Roman sewers were more like storm drains, and served to take standing water away from public areas.

Professionals collected faeces for fertiliser and urine for cloth processing from domestic and public latrines and cesspits. Chamber pots were also used, which could later be dumped in cesspits.

This waste disposal process was just for those who could afford to live in houses; many lived in small, non-domestic spaces, barely furnished apartments, or on the streets.

A common whiff in the Roman city would have come from the animals and the waste they created. Roman bakeries frequently used large lava stone mills (or “querns”) turned by mules or donkeys. Then there was the smell of pack animals and livestock being brought into town for slaughter or sale.

Animals were part of life in the Roman empire.
Animals were part of life in the Roman empire.
Marco_Piunti/Getty Images

The large “stepping-stones” still seen in the streets of Pompeii were likely so people could cross streets and avoid the assorted feculence that covered the paving stones.

Disposal of corpses (animals and human) was not formulaic. Depending on the class of the person who had died, people might well have been left out in the open without cremation or burial.

Bodies, potentially decaying, were a more common sight in ancient Rome than now.

Suetonius, writing in the first century CE, famously wrote of a dog carrying a severed human hand to the dining table of the Emperor Vespasian.

Deodorants and toothpastes

In a world devoid of today’s modern scented products – and daily bathing by most of the population – ancient Roman settlements would have smelt of body odour.

Classical literature has some recipes for toothpaste and even deodorants.

However, many of the deodorants were to be used orally (chewed or swallowed) to stop one’s armpits smelling.

One was made by boiling golden thistle root in fine wine to induce urination (which was thought to flush out odour).

The Roman baths would likely not have been as hygienic as they may appear to tourists visiting today. A small tub in a public bath could hold between eight and 12 bathers.

The Romans had soap, but it wasn’t commonly used for personal hygiene. Olive oil (including scented oil) was preferred. It was scraped off the skin with a strigil (a bronze curved tool).

This oil and skin combination was then discarded (maybe even slung at a wall). Baths had drains – but as oil and water don’t mix, it was likely pretty grimy.

Scented perfumes

The Romans did have perfumes and incense.

The invention of glassblowing in the late first century BCE (likely in Roman-controlled Jerusalem) made glass readily available, and glass perfume bottles are a common archaeological find.

Animal and plant fats were infused with scents – such as rose, cinnamon, iris, frankincense and saffron – and were mixed with medicinal ingredients and pigments.

The roses of Paestum in Campania (southern Italy) were particularly prized, and a perfume shop has even been excavated in the city’s Roman forum.

The trading power of the vast Roman empire meant spices could be sourced from India and the surrounding regions.

There were warehouses for storing spices such as pepper, cinnamon and myrrh in the centre of Rome.

In a recent Oxford Journal of Archaeology article, researcher Cecilie Brøns writes that even ancient statues could be perfumed with scented oils.

Sources frequently do not describe the smell of perfumes used to anoint the statues, but a predominantly rose-based perfume is specifically mentioned for this purpose in inscriptions from the Greek city of Delos (at which archaeologists have also identified perfume workshops). Beeswax was likely added to perfumes as a stabiliser.

Enhancing the scent of statues (particularly those of gods and goddesses) with perfumes and garlands was important in their veneration and worship.

An olfactory onslaught

The ancient city would have smelt like human waste, wood smoke, rotting and decay, cremating flesh, cooking food, perfumes and incense, and many other things.

It sounds awful to a modern person, but it seems the Romans did not complain about the smell of the ancient city that much.

Perhaps, as historian Neville Morley has suggested, to them these were the smells of home or even of the height of civilisation.

The Conversation

Thomas J. Derrick does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. What did ancient Rome smell like? Honestly, often pretty rank – https://theconversation.com/what-did-ancient-rome-smell-like-honestly-often-pretty-rank-257111