The sumerian tablets have an interesting version of the flood episode very different than the biblical account. The question is how do you really know which one is correct the tablets were found in the 1800's and were translated at a later date and everyone just assumed that whatever they said was pagan. They are in stone and are older than any known copy of the bible. If they are not true than whoever wrote them was an incredible sci fi writer.
So the concept of "they took no note" has vastly different implications depending on whose version you accept now most people today will immediately head towards the bible because that's what they have been raised with but does that make it so. If you investigate these tablets it will change everything and I'm not saying absolutely they're right but just that they deserve a fair and unbiased consideration.