Da Vinci Code

People will believe all kinds of ridiculous, unfounded conspiracies, then ignore the realities around them. Don't something like 47% of Americans believe that Iraq had something to do with September 11th?
Still, it wouldn't make a good book that centered around an imaginary conspiracy any less enjoyable. It just wouldn't make it fact.
I have no idea how much of this book is true, but an awful lot of people seem to really enjoy it and there is no denying the role in human history of people being lied to by people in power who then tried to cover their tracks. That part of the premise is true enough and maybe people need to be reminded of it from time to time.