Modern societies are packed full of inventions and useful ideas that have accumulated over hundreds of generations. That's what built up the modern world we live in. We humans, among the millions of species of life, are the only one that thinks up innovative ideas and carries out the complex actions to make them real. What drives us to forever change our world this way? 22 Generations launches forth from a simple observation: we humans innovate because we're dissatisfied, and want to improve our lives. Our brains contain motivational circuitry that relentlessly pressures us to improve our lot...