What was the most important transition in human history, the thing that most drastically altered our species' way of life? David Reich's lab has found evidence pointing to a new answer.There are two standard candidates:1. The shift from hunting and gathering to farming, around 10,000 BC.2. The Industrial Revolution, around 1800 AD.Here's one way to adjudicate this:When a species' environment changes drastically, natural selection accelerates, because the species has to catch up to adapt.So the b