One of the earliest known forms of writing is the cuneiform or sand script which emerged in the late fourth millennium BC and was probably developed by the Sumerians. The time of the flood was roughly around 1656 - 1657th year after creation. The Sumerians did not appear as a nation until around 3500 BC. According to Genesis 11:2 they began began as a nation by settling in the plains of Shi-nar. This was some time after the event of the Tower of Babble which was about 250 years after the flood. One would suppose that the emergence of the cuneiform writing would not occur until the Sameritians had become a more socially developed nation which would take some time. So, the earliest form of written language we know anything about did not even begin to be developed until many years after the flood.
God has made foolish the wisdom of the word and Satan has attempted to dilute, pollute and re-write history as well as the minds of men through deceit, deception and views that are put forth by worldly men.
Most people will regurgitate what they learned at some secular college while sitting under men such as the (ACID GURU) college professor that was in California. So dates and times and carbon dating mean nothing to me when it comes to before the flood as God thru Peter tells us that the world that then was perished by flood which changes all geology on the planet, not to mention the changes in the atmosphere, temps, and all traces of what men had the ability to do before the flood.
This is in all due respect to you and your beliefs and I mean no ill will or nor am I being mouthy brother