On a recent Sunday, at my local Italian market, I considered the octopus. To eat the tentacle would be, in a way, like eating a brain—the eight arms of an octopus contain two-thirds of its half billion neurons. Delicious for some, yes—but for others, a jumping off point for the philosophical question of other minds. “I do think it feels like something to be an octopus,” says Peter Godfrey-Smith, a