…or How I Learned to Stop Worrying and Love Inequality. David R. Henderson (http://www.davidrhenderson.com) is a research fellow at Stanford University’s Hoover Institution, and a professor of economics at the Graduate School of Business and Public Policy, Naval Postgraduate School, in Monterey, California. Thomas Piketty’s Capital in the 21st Century (http://amzn.to/1LT9jLG) managed to do something unprecedented among equation-dense economic tomes, it became the #1 selling book on Amazon.com. The book tapped in to a hot topic among politicians and the general public: the high (and possibly rising) wealth and income shares of the top 1%. However, David points out that although the book was a best-seller, it wasn’t actually a best-reader. Amazon logs the sentences people highlight, and the top five most-highlighted sentences in Capital all appear in the first 26 pages (www.wsj.com/articles/the-summers-most-unread-book-is-1404417569). It seems that, at least among kindle readers, most people didn’t make it past the introduction. It appears that people buy the book to back up the views they already hold. David thinks that the huge interest in economic inequality in general and the wealth of the 1% in particular was sparked in the 1990s by politicians, including Al Gore, and picked up by journalists like Sylvia Nasar (https://en.wikipedia.org/wiki/Sylvia_Nasar), before influencing the economics debate. Piketty has been able to ride this wave of public interest at what appears to be its crest. David distinguishes between inequality of wealth, inequality of income, and inequality of power. Income inequality is the difference in the amount of income we each take in in wages, interest, dividends, and government transfers (e.g. welfare or social security payments), the four main sources of income for most people. Wealth should ideally include the total value of a person’s assets in addition to the stream of income he is likely to earn in the future, though this stream is more often ignored in wealth statistics. Wealth inequality is not the same as income inequality. Critically, since people earn variable income throughout their lives, income inequality doesn’t capture what we think of as the gap between “rich” and “poor.” Retired people who own two-million-dollar homes might have low incomes, but they certainly aren’t poor. Or, to use an example that’s relevant to myself, as a PhD student my income probably sits in the bottom quintile, and yet I can expect a much higher income after I graduate. The major factor in both income inequality and wealth inequality (measured by current assets and not expected earnings) is age. Teenagers earn little or nothing, but they grow into adults and gain skills and education, their incomes rise, and they gain wealth through savings. Even if everyone had the same lifetime earnings, there would still be significant inequality in any given year since some people would be young low-earners, while others would be older, wealthier high-earners. And since the older people would have had the chance to accumulate wealth over a lifetime, they would have twenty times the wealth of their younger counterparts. While there is a correlation between wealth and power, that correlation is by no means perfect. David gives the example of Bill Gates who discovered the hard way that when you have too little political influence, it can be costly. Gates was hit with a long and costly antitrust suit, after which he greatly expanded his lobbying efforts; he had learned his lesson. David agrees with Joseph Stiglitz’ argument (http://amzn.to/1LT9dDC), to some extent, that large accumulations of wealth are the result of rent seeking. Local governments restrict the building of new homes and developments that could expand the supply of housing. Thus, they keep real estate prices artificially high to the benefit of those who already own their homes. This is an example of successful rent seeking by homeowners to the detriment of non-homeowners. However, while Stiglitz would argue that this justifies a higher tax rate on the wealthy, David prefers the more direct solution of simply reducing or removing these restrictions. The following are also mentioned in this episode: Wealth Inequality in America (https://www.youtube.com/watch?v=QPKKQnijnsM) Piketty and Saez vs. Burkhauser and Cornell: Who’s right on income inequality and stagnation? (https://www.aei.org/publication/piketty-and-saez-vs-burkhauser-and-cornell-whos-right-on-income-inequality-and-stagnation/) Income and Wealth by Alan Reynolds (http://amzn.to/1LOy1Ma) The Boskin Commission (https://en.wikipedia.org/wiki/Boskin_Commission) Myths of Rich and Poor by W. Michael Cox and Richard Alm (http://amzn.to/1NOvEYR) Mark J. Perry on individual income inequality (https://www.aei.org/publication/sorry-krugman-piketty-and-stiglitz-income-inequality-for-individual-americans-has-been-flat-for-more-than-50-years/) Greg Mankiw’s favourite textbook (http://amzn.to/1Rihq8j) Bernie Madoff (https://en.wikipedia.org/wiki/Bernard_Madoff) The McCulloch chainsaw (https://en.wikipedia.org/wiki/Robert_P._McCulloch) Lyndon B. Johnson (https://en.wikipedia.org/wiki/Lyndon_B._Johnson) David’s review of Capital in the 21st Century for Regulation (http://object.cato.org/sites/cato.org/files/serials/files/regulation/2014/10/regulationv37n3-9.pdf) David’s (unexpectedly) controversial EconLog post about ordinal utility (http://econlog.econlib.org/archives/2015/05/tyler_cowen_on_14.html) Robert Solow’s review of Capital in the 21st Century (http://www.newrepublic.com/article/117429/capital-twenty-first-century-thomas-piketty-reviewed) Matthew Rognlie’s response to Piketty (http://www.newrepublic.com/article/117429/capital-twenty-first-century-thomas-piketty-reviewed) and Randal O’Toole’s comment on Rognlie’s response (http://www.cato.org/blog/housing-wealth-inequality) Branko Milanović’s blog on global inequality (http://glineq.blogspot.ca/) David’s article on The Bottom One Percent (http://www.hoover.org/research/bottom-one-percent) Peter Jaworski (http://explore.georgetown.edu/people/pj87/?action=viewpublications&PageTemplateID=360 Is Government the Source of Monopoly? By Yale Brozen (http://amzn.to/1HdvyI0)

Don Boudreaux is a professor of economics at George Mason University. He blogs at Café Hayek. I invited him to discuss civil asset forfeiture on the podcast because of a conversation we had about it at a recent Mercatus Center colloquium. Civil asset forfeiture is the practice of the state taking someone’s property on suspicion that the property has been used for wrongdoing, without having to charge the owner with a crime. Civil asset forfeiture had its origins in British maritime law. The British had difficulties with pirates along the Barbary Coast. When the pirates were apprehended and their ships brought back to London, British courts had difficulty deciding what to do with these ships. The ships’ owners were outside the jurisdiction of British law, so the courts couldn’t try and convict them, but they couldn’t send the ships back to them either only to have them return to the seas with a fresh pirate crew! Parliament thus passed a law allowing the courts to charge the property itself with the crime if and only if the property’s owner was outside the jurisdiction of British law. Civil asset forfeiture, in this very limited form, was part of American law from the beginning. In the late 19th century, when alcohol was prohibited in some states, law enforcers started using civil asset forfeiture to confiscate the property of those suspected of producing, trafficking, and selling alcohol. This allowed them to circumvent due process, as American law only guarantees due process rights (such as the right to a trial by jury, the right to an attorney, the presumption of innocence, etc.) to human beings, and an alcohol still is not a human. The US Supreme Court ruled on civil asset forfeiture in the case of Bennis v. Michigan (which Don wrote about in a 1996 article coauthored with A. C. Pritchard). John Bennis was caught with a prostitute in the 1977 Dodge Dart he co-owned with his wife, Tina Bennis. As a result, the state confiscated the car. Tina Bennis, however, had no knowledge of her husband’s wrongdoing, and argued that she should at least be entitled to her half of the proceeds from the sale of the car. The case went all the way to the US Supreme Court, where then-Chief Justice Rehnquist wrote the majority opinion in favour of the State of Michigan. Rehnquist argued that civil asset forfeiture was constitutional since it had been a part of British law when the Constitution was adopted. Rehnquist neglected the fact that the civil asset forfeiture law at that time had only applied when the property owner was outside the legal jurisdiction of the court. John and Tina Bennis were both within the legal jurisdiction of Wayne County, Michigan where the car was seized. Police usually seize the assets of those groups in American society that have little political clout. A young black man driving in an expensive car and carrying a lot of cash can be pulled over and have his car and cash seized on suspicion that he might be a drug dealer. White, middle-class Americans rarely face the blatant, unjust seizure of their assets. However, in a recent case, the City of Philadelphia seized the white, middle-class Sourovelis family’s home after their son sold $40 of heroin on the front lawn. The Sourovelis family is now suing the City of Brotherly Love in a class-action suit with others whose property the city has seized (see Sourovelis v. City of Philadelphia). This case has drawn more public attention to the injustice of civil asset forfeiture, though still less attention than the issue deserves. For more information on civil asset forfeiture, you can learn about it from the Institute for Justice, a DC-based public-interest law firm that works against civil asset forfeiture.

Erik Kimbrough, assistant professor of economics at Simon Fraser University, is an experimental economist. In this episode, we discuss his paper, "Norms Make Preferences Social" which he coauthored with Alexander Vostroknutov.Experimental economics began with Vernon Smith's double auction experiments in the 1950s. Smith wanted to test whether market participants could converge to the equilibrium prices and quantities predicted under neoclassical theory. He found that, indeed, the students in the lab did converge to the optimal prices and quantities, and experimental economics was born.In the late 1970s and 1980s, the practice of testing game theory models in the lab caught on and became mainstream. One of these games, the ultimatum game, features two players dividing up a sum of money. The first play offers the second one an amount, and the second player can accept or reject. Rejection means neither player gets anything, so a (naive) game theorist would predict that player one will offer the smallest amount, a penny, and the second player will accept it. In reality, people often offer a 50-50 split, or 60-40. And when the person offering gets too greedy, say offering an 90-10 split, people routinely reject such offers.What can explain this behaviour? To find out, experimentalists came up with an even simpler game: the dictator game. In this game (really not much of a game) one player decides how to divide up an amount of money between himself and another player. But even without the possibility of rejection, people still give others positive amounts.What can explain this? Experimentalists believed that people were offering positive amounts to appear generous to the experimenters. In order to control for this, experimenters did double-blind studies, using code names and passing envelopes under doors to ensure participants that nobody would know if they kept the money for themselves. And yet people still shared positive amounts!But how can we reconcile people giving away large portions of their money in a lab setting when they don't give similarly large portions of their income in real life? Experimenters realized that the money in the lab wasn't earned, so the participants may have conceived of it differently than money they felt they earned and deserved. So they had participants take a quiz, and awarded the right to be dictator to the highest scorer on the quiz.Combining the double blind and earned income experimental designs, the experimenters were able to get 96% of people to keep the money for themselves.One theory of why people share positive amounts is that people have preferences over payoff distributions. That is, they care about inequality. But this hypothesis is contradicted by the double blind and earned income experimental designs; neither of these affect the final distribution of payoffs, and yet they affect how much people offer in the dictator game.Erik's conjecture is that people offer, for instance, a 50-50 split because they are adhering to a fairness norm. He uses a game where people are instructed to wait at a stoplight, even though they are paid to cross a virtual street as quickly as possible.Indeed, the people who wait at the light, those who have a strong preference for following the norm, are also more likely to offer a 50-50 split in the dictator game. Furthermore, when the norm-following individuals play a public goods game, they are able to maintain high contributions to the public good.You can read more about Erik's work at his personal website

Jimmy Morrison is an independent filmmaker who is currently directing two films: The Housing Bubble and The Bigger Bubble. The Housing Bubble deals with the history of business cycles in America, spanning from the First World War to the 2008 crash. The Bigger Bubble deals with the aftermath of the 2008 crash. These films began as a single project, but Jimmy chose to split it into two films in order to tell the full story. The films’ website provides a synopsis: The Bubble is coming out at a crucial time in American history. Numerous films have blamed the free market for the economic woes of the country. Uniquely, Tom Woods has teamed up with experts such as Ron Paul, Peter Schiff, Jim Rogers, Marc Faber and Doug Casey to explain the economic problems America is facing and what is needed to restore prosperity. You can’t watch the news today without hearing more calls for regulation. Deregulation is consistently the boogey man when it comes to sound bite explanations of this economic crisis. The public currently believes the government saved us during the Great Depression and that it will save us again today. America needs a simple economics lesson on this recession and Tom Woods has done just that in his book Meltdown. The Bubble successfully adapts Meltdown into a feature-length documentary. The Bubble features interviews with numerous economists and financial analysts who actually predicted the housing crisis and recession. The people we are trusting to solve this problem claim no one saw it coming. The fact is Austrian economists predicted this recession years ago, and they are the only ones with the insight necessary to bring us out of this economic slide. This film asks them why this crisis happened, how we recover, and what America is facing.

This episode of Economics Detective Radio features George Bragues, professor of business at the University of Guelph-Humber, discussing his work developing a distinctly Austrian theory of finance. While there have been forays into finance by Austrians such as Mark Skousen and Peter Boettke, Austrians have not yet fully developed a complete and distinctly Austrian theory of finance. George names five pillars of modern finance theory: (1) The capital asset pricing model (CAPM), (2) the Black-Scholes option pricing model, (3) the efficient markets hypothesis (EMH), (4) behavioural finance, and (5) the Modigliani-Miller theorem. CAPM is a model that derives the value of assets based on the risk-free rate and market risk, that is, risk that cannot be diversified away. The Austrian response to this model is that there is no such thing as a risk-free asset, as risk is inherent to human action. An Austrian alternative to CAPM would incorporate the Austrian theory of a natural interest rate derived from time preference. Black-Scholes, a model for pricing options—opportunities to buy or sell at a given price at some point in the future—assumes that price movements are normally distributed. Nassim Taleb has been forceful in his critique of this assumption; in his book, The Black Swan, he argues that returns are subject to so-called Black Swan events. Statistically, this implies a fat lower tail in the distribution of returns. George holds that, given Austrians’ skepticism about mathematics, there is little hope for an Austrian option pricing model. However, pricing assets was never the role of theorists, but of entrepreneurs. The efficient markets hypothesis, developed by Eugene Fama, holds that the market price reflects all available information. This view holds economic equilibrium to be a normal state of affairs. The Austrian view is that equilibrium is an abnormal state of affairs; the market is always tending towards equilibrium, but it rarely reaches equilibrium. Austrian theory holds that identifying misequilibriums and arbitraging them away is the role of entrepreneurs. Identifying such opportunities isn’t easy; it requires prudence, or what Mises called “understanding.” If you believe the EMH, then Warren Buffet is not an example of someone with great insight and prudence; rather, he is someone who has repeatedly won a stock-market lottery. Behavioural finance, developed by Robert Schiller, is a theory that argues that, contra the EMH, market prices reflect psychological factors rather than the real underlying values of the assets being traded. Behavioural finance has identified so many biases that it is essentially irrefutable. For instance, the gambler’s fallacy and the clustering illusion, yield opposite predictions. If a stock price has risen repeatedly, the gambler’s fallacy would hold that it is “due” for a correction downwards, while the clustering illusion would hold that the trend must continue upwards. Behavioural economists could thus explain a movement in either direction according to their theory, making the theory untestable in principle. Austrian theory avoids such psychological theorizing. Austrians hold that you can derive sound theory from the axiom that humans act, that they use means to achieve ends. Austrians have no particular qualm with bringing psychological factors into the analysis of economic history, but they don’t see them as part of economic theory. Modigliani-Miller is a theory of corporate finance that says that the way a firm is financed, with more debt or equity, is irrelevant to its value. M&M holds that the value of the firm is uniquely determined by its discounted stream of revenues. Austrians might contend, in contrast, that firms financed through debt are exposed to greater risk in the case that they make entrepreneurial errors. George is working towards an “Austrian markets hypothesis,” which would hold that markets are constantly endeavoring to achieve equilibrium, but never actually succeeding. Austrians can bring a greater appreciation of understanding, prudence, practical experience, and local knowledge to finance theory. These ideas have been wrongly impugned by modern quantitative finance, which has elevated theoreticians above entrepreneurs.

This episode of Economics Detective Radio features Pierre Desrochers discussing the life and work of Jane Jacobs. Jacobs, born Jane Butzner, was a thinker and activist who wrote about cities. She spent her early career as a business journalist. When she started writing about urban renewal, she recognized the policy for the disaster it was. Jacobs became a voice for the general dissatisfaction with a policy that would bulldoze whole neighbourhoods, relocating the inhabitants into new buildings preferred by urban planning reformers and political elites. The editors of Fortune Magazine invited Jacobs to write a piece about downtowns. Her piece, “Downtowns are for People” became the magazine’s most-discussed article. She developed the ideas in that article into her first and most famous book, The Death and Life of Great American Cities. The book launched her as a minor celebrity. In New York City, she successfully opposed initiatives to “renew” Greenwich Village. She also opposed a plan that would have cut a highway through SoHo, Chinatown, and Little Italy. Eventually she found herself opposing the Vietnam War, and, fearing that one of her sons would be drafted, moved to Toronto. Jacobs’ most important contributions to economics came in her second book, The Economy of Cities. Jacobs is essentially a spontaneous order theorist, though she never used that term. Her concept of entrepreneurship is particularly rich and dynamic. Unlike most economists (even Austrians) she has no urge to talk about how entrepreneurship leads us closer to equilibrium. Her largest influence on the mainstream economics literature is the so-called “Jacobs externality.” Jacobs suggested that innovation would often come from outsiders to a given industry, so having many diverse industries clustered in a small geographic area would lead to innovation. The alternative thesis, associated with Alfred Marshall and later Paul Romer, holds that when a region specializes in a particular industry it allows knowledge spillovers to occur between similar firms. There has been significant empirical research to try to resolve these two opposing views, with Jacobs often coming out the winner. Pierre can be found online at his academic website.

This episode of Economics Detective Radio features Zack Hess. Zack is working on a project called “TruthCoin,” a decentralized prediction market based on the technology behind bitcoin. Prediction markets are a highly effective way to bring together dispersed information and insight into prices that reflect the likelihood of any future event. However, recent attempts to create centralized prediction markets have been thwarted by governments under antiquarian anti-gambling laws. Enter TruthCoin. TruthCoin is a prediction market (currently in beta) that will not depend on any central server or organization. This online market will be dispersed among all the participants and thus more difficult to shut down. Furthermore, TruthCoin will not depend on a central arbiter. The main difficulty faced by the creators of TruthCoin is in creating incentives for human arbiters to judge the outcomes of bets correctly. The solution is for judges to be set against one another, for each judge to get a higher payoff when other judges are wrong. Then any attempted collusion between arbiters falls apart. Zack is an anarchist, and he sees a proliferation of prediction markets as a potential end run around the political class. Prediction markets where people could bet on the outcomes of given policies could force politicians to do what the prediction markets indicate is best. If, for example, a politician proposing a war claims it will have few casualties, a prediction market in “the number of casualties given that war is declared” could contradict the politician’s claim and make the war politically impossible. You can find Zack on github, as well as the TruthCoin project itself. There is also a TruthCoin forum.

In this episode, Glen Whitman discusses Economics of the Undead: Vampires, Zombies, and the Dismal Science, a book he co-edited with James Dow. Glen is an economics professor at California State University and, unlike most academic economists, he moonlights as a TV writer. He first wrote for the TV show Fringe and now writes for the soccer spy drama, Matador. The book’s website provides the following description: “Whether preparing us for economic recovery after the zombie apocalypse, analyzing vampire investment strategies, or illuminating the market forces that affect vampire-human romances, Economics of the Undead: Zombies, Vampires, and the Dismal Science gives both seasoned economists and layman readers something to sink their teeth into. Undead creatures have terrified villagers and popular audiences for centuries, but when analyzed closely, their behaviors and stories—however farfetched—mirror our own in surprising ways. The essays collected in this book are as humorous as they are thoughtful, as culturally relevant as they are economically sound, and provide an accessible link between a popular culture phenomenon and the key concepts necessary to building one’s understanding of economic systems large and small. It is the first book to combine economics with our society’s fascination with the undead, and is an invaluable resource for those looking to learn economic fundamentals in a fun and innovative way.” Among the topics covered in the discussion are helpful hints such as how to meet the vampire man of your dreams, to choose what to bring on your trek across the zombie-infested wastelands you once called home, and to rebuild civilization after the undead apocalypse. Human capital will be particularly helpful in the zombie apocalypse; it has immense value and goes wherever you go. Doctors are often depicted among the survivors of the zombie apocalypse, possibly because survivor groups would rather recruit a doctor than kill him. There’s an analogy to pirates, who would press valuable seamen like surgeons or carpenters into service rather than killing them (for more pirate economics, check out Peter Leeson’s The Invisible Hook). Among the more unexpected chapters of the book is “Killing Time: Dracula and Social Discoordination,” by Hollis Robbins. Robbins connects the infamous Transylvanian villain’s ability to distort his victims’ senses of time to date- and time-keeping standards that some nations had adopted while others had not at the time the book was written. You can find Glen online at econundead.com where he posts about the latest in undead economics news or on twitter as @glenwhitman.

In this episode, Nathan Smith discusses the economics and history of migration and migration restrictions. Nathan is an Assistant Professor of Business Administration: Finance and Economics at Fresno Pacific University and regular blogger at Open Borders: The Case. We start the episode by discussing the economic impacts of Nathan’s own migration to Fresno. Students gain, as he adds to the supply of economics professors, other economists might lose from his competition in labour markets, people looking for parking near the University might lose, as he slightly reduces the supply of available parking spaces, and property owners gain from his demand for housing. In general, anyone Nathan transacts with gains from the transaction, while those who he competes with may suffer some slight loss. The big slogan among open borders advocates is that a significant reduction in migration restrictions could “double world GDP.” Nathan’s own most recent estimates show about a 91% increase world GDP, mainly because people would move from places where they can earn very little (e.g. places with dysfunctional institutions) to places where they can earn quite a bit more (e.g. places with well-functioning  institutions, complementary factors of production, highly developed networks of specialization and exchange, etc.). There are complementarities between human capital and unskilled labour. For instance, great managers are more productive when there are many workers to manage, and the workers are more productive where there are great managers. Nathan’s estimates indicate that as much as 44% of the world’s population could migrate under open borders. This may seem high, but even conservative estimates would put the number of migrants in the billions. While migration would be hard for the first few migrants, diaspora effects would start to make the process smoother and more desirable. In the 19th century, when international migration was less restricted and more common, migrants would form communities within their new countries: there would be a Polish neighbourhood, an Irish neighbourhood, an Italian neighbourhood, etc. These diaspora communities would function as gateways to the new culture, giving people a place to settle while they adjusted to the language and culture of their new country. Today, with the exception of migration within the EU, there are no countries with open borders. While migration is somewhat easier for high-skilled workers, there are still many barriers. People call high-skilled migration “brain drain,” but that is really a perverse way of characterizing it. Are workers’ “brains” their countries’ property? Are they to be kept as forced labourers for their countries’ benefit? In addition, the idea of brain drain is empirically questionable. If getting high skills is a ticket to a better life in a different country, the possibility of migrating increases the incentive to gain high skills, thus offsetting the loss of those who eventually emigrate. When people can migrate, or “vote with their feet,” this puts competitive pressure on governments. For instance, governments’ ability to institute very progressive taxation is curtailed by high earners’ ability to move elsewhere. That the Soviets had to build a Berlin Wall to keep their citizens from leaving shows that the possibility of exit was threatening to the Soviet government. Some restrictionists compare immigrants to the Visigoths in the Western Roman Empire. That is a poor analogy to modern migration, as the Visigoths migrated as a complete political entity. Not only do immigrants assimilate into the existing industries, they are disproportionately entrepreneurial, founding new industries wherever they go. Nikola Tesla, Andrew Carnegie, Sergey Brin, and Elon Musk were all immigrants. During the era of open borders, many of the innovations (such as Henry Ford’s assembly line) were designed to be complementary with all the low-skilled labour made available by migrants. Much of our modern technological development is focused on economizing on low-skilled labour, but low-skilled labour is only artificially scarce in wealthy countries. Many basic tasks that high earners do for themselves could be contracted out to low-skilled migrants. Childcare, for instance, could be very inexpensive under open borders; skilled parents would not need to leave the workforce to raise their children. Nathan sees hope for more open borders in the future. Migration restrictions are contrary to people’s consciences, which makes them difficult to enforce. This may slowly erode the restrictions. Furthermore, Christian churches are essentially supportive of open borders. There is hope for the world in moving towards open borders, but it will require moral will. Nathan Smith can be found online at Open Borders: The Case.

The minimum wage is a contentious issue among economists, and yet it enjoys near-universal support among the public. In my view, public views of the minimum wage are simply the result of a lack of careful thought by most people. Daniel Kahneman’s theory that people, when faced with a difficult question, substitute a simpler question that they can easily answer, applies particularly well in this case. People answer the question of whether they would like people to earn more when the real question is whether government should mandate higher wages (I first heard this argument from Bryan Caplan on EconLog). A purely empirical argument for or against the minimum wage is methodologically wrong-headed because empirics do not speak for themselves. Sound theory must be the economist’s first tool in understanding the effect of a policy such as the minimum wage. Before we can understand something like the minimum wage, we must understand the role of prices in allocating factors of production to their various uses. The price of a factor signals to entrepreneurs that that factor is scarce, that it is needed elsewhere in the economy, and that the entrepreneur who can reduce his usage of relatively more scarce factors in favour of relatively less scarce ones can earn profits, while entrepreneurs who fail to do so earn losses. I give the example of a sandwich shop during an oil boom; the high price of labour caused by the oil boom leads the sandwich shop to substitute away from labour in various ways. The oil boom in my illustration is irrelevant to the story. The sandwich shop would adapt to an increased price of labour no matter what caused it. If the cause is a minimum wage law, the people no longer employed making sandwiches are involuntarily unemployed rather than finding employment in some other industry. Minimum wage opponents sometimes get into trouble when they draw supply and demand curves to illustrate the impact of the price floor. The problem with this is that supply and demand diagrams come with built-in assumptions that do not hold true in the case of labour markets. Low-skilled labour is not a homogeneous quantity being sold in a centralized market. The simple supply-and-demand story does not capture all the effects of the minimum wage. For instance, firms substitute between different sorts of workers affected by the minimum wage. In addition, the other terms of employment contracts can change in response to a minimum wage law, such as training and benefits.