Did Muhammad Exist?, will be released on April 23rd. Although I haven't read the book yet, I suspect that I'll agree with most (or all) of the facts Robert presents, but that I will radically disagree with his conclusion. Since Robert and I will both be in Michigan for the Jessica Mokdad Human Rights Conference on April 29th, it seems we have an excellent opportunity for a little "in house" debate. Muslims of the world, prepare to thank me for defending your prophet's existence. (Afterwards, however, if you see me coming, better step aside, because I'm coming for your prophet.)
***UPDATE*** Robert accepted the challenge. We're on for the 29th!