Is the da vinci code accurate?

The Da Vinci Code - is it accurate? Sitting on the back porch of a Nova Scotia bed and breakfast one evening, I was engaged in a rather remarkable discussion with the owner of the house. "Long before Columbus," she said, "people from Europe visited this part of the world. We know that because they find a lot of stuff around here that just doesn't fit what we were taught in school. I think the Knights Templar visited this place and stashed their treasure."  It was interesting, and there is a lot of evidence that European…