Sorry if that's irreverent, but this revisionism just rankles. The original Word is quite miraculous enough without all these attempts to find new truth.
And all the rest, as Dylan said, ‘Don’t criticise what you can’t understand.’
I have heard a lecture on this at www.templehouse-publishing.com
Refute it if you can. Also there is an academic endorsement at
http://www.telegraph.co.uk/news/newstopics/religion/7547540/Jesus-was-son-of-an-architect-book-claims.html
If there was never anything ‘new’, what is Jesus saying in Matthew 13:52?
Not ‘guilty til proved innocent’...