Shannon and Thorp Hack the Roulette Wheel

It was in this tinkerer’s laboratory that they set out to understand how roulette could be gamed, ordering “a regulation roulette wheel from Reno for $1,500,” a strobe light, and a clock whose hand revolved once per second. Thorp was given inside access to Shannon in all his tinkering glory: Gadgets . . . were everywhere. He had a mechanical coin tosser which could be set to flip the coin through a set number of revolutions, producing a head or tail according to the setting. As a joke...

 Euclid's Elements as a Game

"If video games had been around in 350 BC, Euclid would have made a video game," Devlin told me. The thirteen books of Euclid's Elements would have been the supplemental material, a PDF file that you could read if you wanted to. "People think I'm joking—I absolutely mean that. Euclid would not have written a textbook, he would have designed a video game." Peek at any of his proofs, Devlin said, and you'll quickly find that the great Greek mathematician, often called the father of geometry, ...

 nodus tollens

n. the realization that the plot of your life doesn’t make sense to you anymore—that although you thought you were following the arc of the story, you keep finding yourself immersed in passages you don’t understand, that don’t even seem to belong in the same genre—which requires you to go back and reread the chapters you had originally skimmed through to get to the good parts, only to learn that all along you were supposed to choose your own adventure.