Leveling and sharpening are two functions that are automatic and exist within memory.
Therefore, it makes it easier to fill in the memory gaps that exist.
According to a study conducted by psychologists in 1945 leveling and sharpening is involved in the retelling of stories.
Noah's interaction with the rest of the mankind and its explicit portrayal as wicked is not included in the Bible.
In the story given here it is portrayed as if God summoned a flood from nowhere, instead of first making it rain as it is described in the Bible.