It is all Lies
You are correct in that, this work is ALL lies. Nothing written in this novel or portrayed in this film can stand on its own ground, well next to nothing(paris is in france). The gnostic Gospels in the same book as the Dead Sea Scrolls, WHAT!!! The two will never and have never even been sloppily associated with one another, The Dead Sea scrolls have nothing at all written in them with religious context.
That is the point of my previous post, this is all quite rediculously construed to the public as truth when all it does is allow them not only to remain ignorant of the truth but to believe in lies none the less. This article IMO only strengthens the argument that The DaVinci Code is based on truth, when it so blatantly is not.