I, for one, feel that the point Jonathan is no doubt driving towards is a perfectly valid point to make. I also happen to feel that it ends up being perfectly irrelevant with regards to the issue that many atheists have with revealed scripture. A falsehood/error/inaccuracy/fallacy/ that is transmitted thousands of times in exacting detail is still a falsehood/error/inaccuracy/fallacy. Whether or not we are in possession of an accurate copy of what the authors intended to write is immaterial to the validity of the actual contents of the text.
But I'm sure Jonathan will work thru all of that next time, if we give him the chance. After all, he has been nothing if not a good sport so far, and I look forward to hearing the rest of his presentation.