This is evident by the discovery of fossilized ferns and amphibians on Antarctica.
Relatively insightful accounts can be drawn from the Bible, apocrypha, and ancient Babylonian and Greek accounts of antediluvian civilization.
Perhaps it was the shortened human lifespan that caused people to feel the need to write down their experiences or what had been learned.
There had become a sense of urgency to preserve ones essence in some permanent form.
It may have been this reduction in life expectancy more than anything else that induced the formation of the written word and ultimately the technological achievements we have made.
Back when people lived to be 1000 years of age there was little need to archive knowledge.Most people would prefer to talk rather than write letters.