After a year of reading and looking, I arrived at the place of conceding that scholarly consensus about the authorship of the Bible gives a pretty low score to the traditional ascriptions. The best information today indicates that many books were not written by who we thought or when.
The ironic and painful part of this is realizing that the answer could have been found very quickly and easily – by simply reading the Wikipedia entry on authorship of the Bible. Heavily annotated, the basic viewpoint there comports with the net information that I’ve seen. That’s sort of sad. If I wanted to know the skinny on the Book of Mormon or the Koran, the first place I would go would be Wikipedia. It was one of the last places I went on Biblical texts. We are very accustomed to learning about our religion from inside our religion.
Authorship: http://en.wikipedia.org/wiki/Authorship_of_the_Bible
The Exodus: http://en.wikipedia.org/wiki/The_exodus
The Flood: http://en.wikipedia.org/wiki/Flood_geology