We should all be dead. How our soft, tasty, monkey ancestors — or whatever rodents they were a hundred million years before that — weren’t all devoured by terrifying birds, blood-thirsty lizards, and snakes the size of trees is a literal miracle. You’d have a better chance of hitting Black 17 on a roulette table five times in a row than we did being here. All of our ancient squirrel cousins should have met their ends in the webs of prehistoric mega-spiders. Raptors should be ruling the earth.