Anything before that is prehistory and is basically nothing but pure guesswork. All we have to understand it is relative (not absolute) dating systems from which we can produce theories.
As for a lot happening in a thousand years, I don't believe the evolutionary model allows for contact between Mesopotamia, China, Papua New Guinea, sub-Saharan Africa, the Americas and all the other places that independently developed agriculture within that 1,000 year timeframe. If you can't explain it by human contact and the spread of ideas/technology, then how do you explain it?
I'm only going to fight one battle at a time, but I'm guessing your question has something to do with the fact that conditions in the very early universe were totally different from what they are now (as in, basic fundamental laws etc).
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