For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
James Kraft
Islam started with Abrahams ill legitimate son by his maid servant. Sarah talked Him in to it, and then got mad because he did. Abraham sent her and Ishmael away because I was causing all kinds of problems.
Sarah was old, and did not think she could conceive, so she decided that Abraham had to do it some other way. We always get in trouble when we do not do it Gods way. Abraham started the Islamic race.
Arthur Carpenter
What is the origin of the Qur'an? Were there any "dead sea scrolls" or any recorded evidence?