Those who take the Genesis flood story literally sometimes point to the impracticality of Utnapishtim's cube-shaped ark. They say that, because the dimensions of the Genesis ark are much more credible than those of the Sumerian ark, Noah's story must be the 'true' one while Utnapishtim's story is obviously fanciful.
hmm havn't heard that one before, of course i wouldn't put it past people. but i have to say people that do this make themselves look even stupider by arguing this, i mean come on? claiming their myth is right because another is even less realistic?
no one expects anyone to believe the utnapishtim story would work anymore than the noah one works, well people who arn't promoting it as the truth arn't