EconTalk

Gary Taubes, author of Why We Get Fat, talks with EconTalk host Russ Roberts about why we get fat and the nature of evidence in a complex system. The current mainstream view is that we get fat because we eat too much and don't exercise enough. Taubes challenges this seemingly uncontroversial argument with a number of empirical observations, arguing instead that excessive carbohydrate consumption causes obesity. In this conversation he explains how your body reacts to carbohydrates and explains why the mainstream argument of "calories in/calories out" is inadequate for explaining obesity. He also discusses the history of the idea of carbohydrates' importance tracing it back to German and Austrian nutritionists whose work was ignored after WWII. Roberts ties the discussion to other emergent, complex phenomena such as the economy. The conversation closes with a discussion of the risks of confirmation bias and cherry-picking data to suit one's pet hypotheses.

Nobel Laureate Joseph Stiglitz of Columbia University talks with EconTalk host Russ Roberts about the ideas in his recent book, The Price of Inequality. Stiglitz argues that the American economy is dysfunctional, benefitting only those at the very top while the bulk of the workforce sees little or no gain in their standard of living over recent decades. Stiglitz blames this result on deregulation and the political power of the financial sector and others at the top. He wants an increase in regulation and the role of government in the economy and a more transparent Federal Reserve Bank that he blames for coddling the financial sector. The conversation also includes a discussion of the Keynesian multiplier.

Luigi Zingales of the University of Chicago and author of A Capitalism for the People talks with EconTalk host Russ Roberts about the ideas in his book. Zingales argues that the financial sector has used its political power to enhance the size of the sector and the compensations executives receive. This is symptomatic of a larger problem where special interests steer resources and favors based on their political influence. Zingales argues for a capitalism for the people rather than a capitalism for cronies or the politically powerful. The conversation concludes with a plea by Zingales to his fellow economists to speak out against behavior that is legal but immoral--lobbying Congress for special treatment that exploits others to benefit one's own industry, for example.

Enrico Moretti of the University of California, Berkeley and the author of the New Geography of Jobs talks to EconTalk host Russ Roberts about the ideas in his book. Moretti traces how the economic success of cities and the workers who live there depends on the education of those workers. Moretti argues that there are spillover effects from educated workers--increased in jobs and wages in the city. He uses changes in the fortunes of Seattle and Albuquerque over the last three decades as an example of how small changes can affect the path of economic development and suggests a strong role for serendipity in determining which cities become hubs for high-tech innovation. The conversation concludes with Moretti making the case for increasing investments in education and research and development.

Jim Manzi, author of Uncontrolled, talks with EconTalk host Russ Roberts about the reliability of science and the ideas in his book. Manzi argues that unlike science, which can produce useful results using controlled experiments, social science typically involves complex systems where system-wide experiments are rare and statistical tools are limited in their ability to isolate causal relations. Because of the complexity of social environments, even narrow experiments are unlikely to have the wide application that can be found in the laws uncovered by experiments in the physical sciences. Manzi advocates a trial-and-error approach using randomized field trials to verify the usefulness of many policy proposals. And he argues for humility and lowered expectations when it comes to understanding causal effects in social settings related to public policy.

Jonah Lehrer, staff writer for The New Yorker and author of Imagine: How Creativity Works, talks with EconTalk host Russ Roberts about the science of creativity. They discuss focusing vs. ignoring as a way to solve problems, the potential for computer-based creativity, how W. H. Auden used drugs to improve his poetry, Bob Dylan, Steve Jobs, and the creative power of mindless relaxation. The conversation closes with a discussion of what policies might increase creativity.

Ed Yong, science writer and blogger at "Not Exactly Rocket Science" at Discover Magazine, talks with EconTalk host Russ Roberts about the challenges of science and science journalism. Yong was recently entangled in a controversy over the failure of researchers to replicate a highly-cited and influential psychology study. He discusses the issues behind the failed replication and the problem of replication in general in other fields, arguing that replication is under-appreciated and little rewarded. After a discussion of the incentives facing scientists, the conversation turns to the challenges facing science journalists when work that is peer-reviewed may still not be reliable.

Lawrence H. White of George Mason University and author of The Clash of Economic Ideas talks to EconTalk host Russ Roberts about the economists and their ideas of the past one hundred years. They discuss Keynes and Hayek, monetary policy and the Great Depression, Germany after the Second World War, the economy of India, and the future of monetary policy.

Nobel Laureate Ronald Coase shares insights on his career in economics, his influential papers on firms and social costs, interactions with Keynes and Hayek, and perspectives on the Chinese economy. Discussions include the nature of firms, decision-making processes, trial and error, public choice theory, and China's transformation to a capitalist economy. The episode closes with optimism for the future and appreciation for the guest.

David Owen, author of The First National Bank of Dad, discusses teaching kids about money, negotiating with children, teaching proper investment strategies, the poetry and prose of economics, measuring wealth and happiness, and teaching kids about money and work.