 No, we don't even have to go back in time to talk about how slow we are. The fastest human being on the planet, the fastest human who's ever existed as far as we know, Usain Bolt, the fastest he ever ran in his 100-meter world record-setting race was 28 miles an hour. That's half the speed, half the speed of a galloping zebra or antelope. It's half the speed of a leopard or a lion.