 We can imagine prehistoric hunters-gatherers trying to time their hunts with the full moon, because that's something that we have largely forgotten. We're never paying attention to this. But if you are a hunter-gatherer in a place, in a world that's entirely dark, except for the cosmic luminaries above us, then you absolutely know that when the sun sets on a full moon night, that's when the moon rises. And that means that if you're still hunting prey out at dusk, out at sunset,