10,000 years is only 500 generations. Consider that we usually have reliable ties from the present going back 4-6 generations (our great grandparents, assuming

10,000 years is only 500 generations. Consider that we usually have reliable ties from the present going back 4-6 generations (our great grandparents, assuming everyone must age to be older than 20 before reproducing) and you realize that we're privy to a shocking 1% view of human civilization timewise. Amazing! My grandparents grew up without running water, as did everyone before them.