Except physical evidence. There is that also.The theory that life came from the process of evolving is not based on anything but belief actually.
Often unreliably, though.Written records tell us about the past of course.
Only Scripture tells us of the past before the flod though of course, since it is God's record piped to man, and He was there.
That is your opinion. The actual, physical evidence does not show the existence of a flood.
Your religious beliefs foisted and imposed and smeared all over evidences is reliably unreliable! Count on it!
I consider physical evidence to be more reliable than written accounts because I know that people lie, are ignorant, like to exaggerate, or just like a good story (whether it is true or not). Physical evidence can't lie.