ether it be large or small. This has nothing to do with the ability to write, hold political office, keep a god, keeping written history, or even to have a permanent home. Although mental capacity is advantageous, it has next to nothing to do with civilization in its base form. The only brainpower that matters in civilization is the ability to think rationally. The smaller mental capability of the Homo habilis still held those prehistoric people together. It supplied them with a sense of community and responsibility toward it. We still dont always think rationally, and yet we are a civilization....