The Society of Mind by Marvin Minsky

Human intelligence was created by this quote unquote dumb process of accidental innovation, which we have not been able to unravel yet. So here's the funny paradox that we think human intelligence is the gold standard. That's the best way to be intelligent. And yet it wasn't designed by someone just sitting around and looking at a white born with a bird beak. But by trying lots of things over time, having mutations, you end up with incredibly complicated solutions.