Ellis wrote:

"or that it was arranged by aliens and it is in fact DNA not animals and they decanted them at the end."

I actually know people who believe that. I keep trying to point out to them the whole story is most likely a myth. The story may have originated through the survival of a Mesopotamian farmer along with his family and livestock but there's no need to explain anything more complicated. But biblical beliefs are so deeply ingrained that even people who would claim not to be Christian still try to come up with explanations for biblical stories. Crazy, isn't it.