For me the most important question is how do they, Carlo Vecce, Kemp and Pallanti, do it? How can they convince journalists to write about their nonsense? They always claim they found contemporary sources for their speculations regarding Leonardo da Vinci's mother who was a slave or a peasant girl according to them. But I have never seen these contemporary sources. Did the journalists read these pretended sources? Of course not!!! We still have only one contemporary source regarding Leonardo's mother: Anonimo Gaddiano, who was well informed and he described Leonardo’s mother as a woman of “nata di buon sangue”, "born of good blood”, which means she was definitely no slave, the lowest of the all human beings in the past, or a peasant girl. Antonio da Vinci would have never accepted an illegitimate grandson born by a slave or a peasant girl in his house. Know the traditions of the past and do not spread the nonsense of Know-it-all-people!!! Start by reading this very important book: Thomas Kuehn: Illegitimacy in Renaissance Florence.