“Absurd” is how J.V. Field, president of the Leonardo da Vinci Society and historian of art at the University of London, described the book’s theory about Leonardo’s putatively hidden messages. “Everything I know about how pictures were used to communicate indicates that the theory is absurd,” he told News-Press. “This means that I should require very strong evidence indeed to make me take it seriously—such as a document written by Leonardo himself giving an explanation of the procedure he followed; and the authority of the document would need to be established by unassailable provenance. In the present case, that is clearly an unattainable standard of proof.” Authentic history requires proof, said Field, but “The Da Vinci Code offers none that scholars would recognize.”
from an article online
http://maclaurin.org/article_detail.php?a_id=53