Your timeframe of 10,000 years ago as "multicellular life" and "early humans and all" is WAY off. There have been human-like animals for 2 million years, there

Your timeframe of 10,000 years ago as "multicellular life" and "early humans and all" is WAY off. There have been human-like animals for 2 million years, there have been multicellular life forms for probably a few billion.