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Rationally Speaking is the official podcast of New York City Skeptics. Join Julia Galef and guests as they explore the borderlands between reason and nonsense, likely and unlikely, science and pseudoscience. Rationally Speaking was co-created with Massimo Pigliucci.

Current Episodes


Monday
Aug212017

RS 191 - Seth Stephens-Davidowitz on "What the internet can tell us about human nature"

Release date: August 20th, 2017

Seth Stephens-Davidowitz

There are a lot of sensitive topics about human nature that would be interesting to study, such as people's sexual behavior, or how racist people really are. Researchers studying those questions have always faced the problem that we tend to lie on surveys -- but we don't lie to Google. This episode features Seth Stephens-Davidowitz, economist and data scientist, and author of the book Everybody Lies: Big Data, New Data, and What the Internet Can Tell Us About Who We Really Are. Seth and Julia discuss the insights new research gives us into which parts of the USA are more racist, what kinds of strategies reduce racism, whether the internet is making political polarization worse, and the sexual fetishes and insecurities people will only admit to their search engine.

Seth's Pick: "The Better Angels of our Nature" by Steven Pinker

Edited by Brent Silk

Music by Miracles of Modern Science

 Full Transcripts 

Monday
Aug072017

RS 190 - Amanda Askell on "Pascal's Wager and other low risks with high stakes"

Release date: August 6th, 2017

Amanda Askell

You've probably heard of Pascal's Wager: That it's rational to believe in God, because if you're wrong it's no big deal, but if you're right then the payoff is huge. This episode features philosopher Amanda Askell, who (though not religious herself) argues that it's much trickier to rebut Pascal's Wager than most people think. Amanda and Julia also discuss how to handle other decisions where a risk has very low probability but would matter a lot if it came true -- should you round them down to zero? Does it matter how measurable the risk is? And should you take into account the chance you're being scammed?

Amanda's Pick: "Infinite Utilitarianism: More Is Always Better" by Luc Lauwers and Peter Vallentyne

Edited by Brent Silk

Music by Miracles of Modern Science

 Full Transcripts 

Sunday
Jul232017

RS 189 - Stephan Guyenet on "What causes obesity?"

Release date: July 23rd, 2017

Stephan Guyenet

In this episode Julia sits down with neuroscientist and obesity researcher Stephan Guyenet, to talk about what scientists know so far about the causes of obesity, and in particular the brain's role in regulating weight gain. Julia and Stephan cover questions such as: Why did obesity start to increase in the United States in the latter half of the 20th century? Does the body have a "set point" of fat that it tries to defend, and what affects those set points? Are low-carb diets more effective for weight loss than low-fat diets, and if so, what explains the difference?

Stephan's Book: "The Hungry Brain"

Stephan's Pick: "Salt Sugar Fat: How the Food Giants Hooked Us" by Michael Moss

Edited by Brent Silk

Music by Miracles of Modern Science

 

Full Transcripts 

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