JavaScript Runs the World—Maybe Even Literally

Lex Fridman has done many long interviews on his popular podcast. Even so, the episode with the legendary programmer John Carmack has an unhinged director’s-cut feel to it. Over five hours, Carmack dishes on everything from vector operations to Doom. But it’s something Fridman says, offhand, that really justifies the extended run time: “I think that if we’re living in a simulation,…