Does Dan Brown believe the facts?

Dan Brown was interviewed by Matt Lauer on NBC’s Today Show, who asked, "How much of this is based on reality in terms of things that actually occurred?"
Brown responded, "Absolutely all of it. Obviously Robert Langdon is fictional, but all of the art, architecture, secret rituals, secret societies—all of that is historical fact."
The Book is presented as a novel; therefore, Brown has no footnotes to question his claims.
(The "Fact" statement allows the reader to assume the "Facts" in the book are true except for the fictional story line.
The reader then gives consent to these "Facts" allowing false claims about history, Jesus and Christianity to be weaved into the story .)


Is the book accurate?
The Book is filled with historical and factual errors. Here are just a few to make the point. If this book is wrong on such minor points why would anybody trust it for eternal issues?

Ø Brown’s Error: The book claims there are 666 panes of glass on the pyramid outside the Louvre. The Museum says there are 673. (Page 21)

Ø Brown’s Error: The book claims the Olympics were held for Venus in 8-year cycles but they were actually held for Zeus in 4-year cycles. (Page 36)

Ø Brown’s Error: Mona Lisa is an androgynous portrait representing the fusing of male and Female (Page 120)
However, Mona Lisa is a young Florentine woman who in 1495 married the well-known figure, Francesco del Giocondo, and thus came to be known as "La Gioconda". This is confirmed by the discovery of documentation in Florence, Italy archives. She had five children and two became nuns.

Ø Brown’s Error: Sir Isaac Newton was a secret "Goddess Worshipper". Yet it is well known that he was a devout Christian …who wrote a commentary on the book of Daniel and Revelation and calculated the physical return of Christ between the years 2000 and 2050


Ø Brown’s Error: The Gnostic Gospel, The Gospel of Philip was not written in Aramaic as the Da Vinci Code implies but in Coptic, translated from Greek. (Page 246)