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Freakonomics Radio

Freakonomics Radio

How to Be a Double Unicorn, with John Urschel | Better in Person

Sep 16, 2026 · 33m

Coming soon to iPhone. Already have it? “Listen in Starcast” takes you straight there.

On this episode

About this episode

He was thriving in the N.F.L., but then he decided to focus on mathematics — a subject he now teaches at M.I.T. John walks Stephen Dubner through the whole story, teaches him some blocking techniques, and explains why some infinities are bigger than others. If you'd like to see the video version of Better in Person, you can watch it on YouTube or Apple Podcasts.