Amaryllis Fox: “What Does This New Version of Mutually Assured Destruction Look Like?” (People I (Mostly) Admire, Ep. 24)

She spent nearly a decade as an undercover C.I.A. operative working to prevent terrorism. More recently, she hosted The Business of Drugs on Netflix. Amaryllis Fox — now Kennedy — explains why intelligence work requires empathy, and she soothes Steve’s fears about weapons of mass destruction.

Greg Norman & Mark Broadie: Why Golf Beats an Orgasm and Why Data Beats Everything (People I (Mostly) Admire Ep. 23)

Steve Levitt is obsessed with golf — and he’s pretty good at it too. As a thinly-veiled ploy to improve his own game, Steve talks to two titans of the sport: Greg “The Shark” Norman, who was the world’s top-ranked golfer for more than six years; and Mark Broadie, a Columbia professor whose data analysis changed how pros play the game.

Marina Nitze: “If You Googled ‘Business Efficiency Consultant,’ I Was the Only Result.” (People I (Mostly) Admire, Ep. 19)

At 27— and without a college degree — she was named chief technology officer of the Department of Veterans Affairs. Today, Marina Nitze is trying to reform the foster care system. She tells Steve how she hacked the V.A.’s bureaucracy, opens up about her struggle with Type 1 diabetes, and explains how she was building websites for soap opera stars when she was just 12 years old.

Robert Sapolsky: “I Don’t Think We Have Any Free Will Whatsoever.” (People I (Mostly) Admire, Ep. 18)

He’s one of the world’s leading neuroscientists, with a focus on the physiological effects of stress. (For years, he spent his summers in Kenya, alone except for the baboons he was observing.) Steve asks Robert why we value human life over animals, why he’s lost faith in the criminal-justice system, and how to look casual when you’re about to blow-dart a very large and potentially unhappy primate.

Emily Oster: “I Am a Woman Who Is Prominently Discussing Vaginas.” (People I (Mostly) Admire, Ep. 17)

In addition to publishing best-selling books about pregnancy and child-rearing, Emily Oster is a respected economist at Brown University. Over the course of the pandemic, she’s become the primary collector of data about Covid-19 in schools. Steve and Emily discuss how she became an advocate for school reopening, how economists think differently from the average person, and whether pregnant women really need to avoid coffee.

Joshua Jay: “Humans Are So, So Easy to Fool.” (People I (Mostly) Admire, Ep. 16)

He’s a world-renowned magician who’s been performing since he was seven years old. But Joshua Jay is also an author, toy maker, and consultant for film and television. Steve Levitt talks to him about how magicians construct tricks, how Joshua’s academic studies of magic have influenced Levitt’s life, and whether Jesus might have been a magician.

Tim Harford: “If You Can Make Sure You’re Not An Idiot, You’ve Done Well.” (People I (Mostly) Admire, Ep. 15)

He’s a former World Bank economist who became a prolific journalist and the author of one of Steve Levitt’s favorite books, The Undercover Economist. Tim Harford lives in England, where he’s made it his mission to help the public understand statistics. In their conversation, Steve gives Tim some feedback on his new book, The Data Detective, contemplates if it’s possible to tell great stories with data, and Tim explains how making mistakes can be fun. 

Yul Kwon (Part 2): “Hey, Do You Have Any Bright Ideas?” (People I (Mostly) Admire, Ep. 14)

He’s so fascinating that Steve Levitt brought him back for a second conversation. Yul Kwon currently works at Google, but he’s been a lawyer, political organizer, government regulator, organ donation activist, and Survivor winner. Steve asks Yul why he’s so altruistic, how Google and Apple are helping track COVID-19, and whether the best way to pick a president might be a reality show.

Yul Kwon: “Don’t Try to Change Yourself All at Once.” (People I (Mostly) Admire, Ep. 13)

He has been a lawyer, an instructor at the F.B.I. Academy, the owner of a frozen-yogurt chain, and a winner of the TV show Survivor. Today, Kwon works at Google, where he helped build tools to track the spread of COVID-19. But things haven’t always come easily for him. Steve Levitt talks to Kwon about his debilitating childhood anxieties, his compulsion to choose the hardest path in life, and how Kwon used his obsession with game theory to stage a come-from-behind victory on Survivor.

Sue Bird: “You Have to Pay the Superstars.” (People I (Mostly) Admire, Ep. 12)

She is one of the best basketball players ever. She’s won multiple championships, including four Olympic gold medals and four W.N.B.A. titles — the most recent in 2020, just before turning 40. She also helped negotiate a landmark contract for the league’s players. Sue Bird tells Steve Levitt the untold truth about clutch players, her thoughts about the pay gap between male and female athletes, and what it means to be part of the first gay couple in ESPN’s The Body Issue.