Dont dismiss entirely that this is a science. This particular study is a science, which are seldom without its cynics, atheists and several detached working researchers. Its more about DaVinci, who *he* was, and the inspiration he derived from that, which is rather well known in his historic works.
Confirmations and affirmations dont sell a lot of books beyond the science genre and in this case, the dying arts community.
I was mocking the author Dan Brown, not the Art of Da Vinci or the science behind his work.
(sigh)