What if Noah DID exist? What if he were but a simple farmer who believed he was under devine hindsight, decided to construct a seaworthy vessel for the sole purpose of saving his OWN livestock? You know the format, 2 cows, 2 sheep, 2 pigs, 2 goats etc. What if, over time, and by the simple process of word of mouth, the story of this simple farmer\'s actions to save his own livelyhood "evloved" into the Biblical version we all know today?
So, to say that Noah did not exist can only be passed off as foolish. It is highly posible that he did exist, and that his noble actions were adopted & immortalised by whoever wrote the bible for being so called proof of Gods existance.