I totally agree Sybe. I too read HBHG long before The Da Vinci code and then learnt about it being basically debunked. Whatever the case, the idea of the grail not being a physical cup at all is an intersing one and I was just introducing Adam to the idea that a legend (in this case 'the cup of christ') can be altered and adapted from it's original meaning, therefore, Legends are of very little use - If the grail really does exist, it may not actually be a cup at all. It may have nothing to do with Christ. The same goes for the Arc. Nice to believe though...