Speculations about Mona Lisa he had had no access to the actual painting, said that after "every laboratory test possible" in 2004 and 2009 that "no inscriptions, letters or numbers, were discovered during the tests." and that "The ageing of the painting on wood has caused a great number of cracks to appear in the paint, which have caused a number of shapes to appear that have often been subject to over-interpretation". Speculations about Mona Lisa The 16th-century portrait Mona Lisa, or "La Gioconda" ("La Joconde"), painted in oil on a poplar panel by Leonardo da Vinci, has been the subject of a considerable
Criticism of The Da Vinci Code that it is simply a masterful portrait of a woman. Olson and Meisel also take issue with the idea that Leonardo painted the "Mona Lisa" as a self-portrait, and that this idea is based on the fact that points of congruency are found between Leonardo's face and the Mona Lisa's. Olson and Meisel respond that points of congruency can be found among many faces, which is how computer morphing of faces is facilitated. The title of the book is not consistent with naming conventions, because "Da Vinci" was not Leonardo's surname. As Tom Chivers of "The Daily Telegraph" comments, "[Leonardo]