That article does indeed look interesting, thanks. I remember talking about this general issue with Blues in my "9/11: What really happened..." thread, before cutting things off with the goal of mapping out the entire thread first... A lot of religious beliefs don't make sense either, and yet, people have been defending them for millennia. When you challenge people's deeply held beliefs, I can easily see why they'd defend them so vehemently. In the interests of a productive discussion, I think the trick is to try to minimize visceral responses and maximize intellectual ones with the aim of expanding the factual knowledge of the subject under discussion for everyone involved. I've endeavoured to do it for years, with varying degrees of success.