Comment by pizzapill

We are talking about time frames that are many times longer than the existence of modern humans as a species. We have absolute zero clue what most humans did 200k years ago, we have only little knowledge what humans did 4000 years ago. How can you expect us to communicate with a world in eight hundred thousand years, or 1.6 million years? We don't even manage to get any of the nuclear waste out of our oceans we put there 40 years ago.