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An ideal companion to Gun, Germs and Steel, this book looks into human history as an evolution from simple sameness to diversity and then toward complex sameness. First people lived in simple, small groups, spoke only a few languages, and pursued a narrow range of survival strategies. As groups spread out across the world, broader cultural variety - more languages, differing toolkits, more social complexity. Through the growth of interactive webs, best practices spread, diversity declined, and complexity became the rule - the new uniformity. Societies that resisted disappeared. Modern human society is one huge web of cooperation and competition, sustained by massive flows of information and energy.