Art experts find possible Leonardo Da Vinci fresco.

I was interested when I read this news....
The truth is that the first thing that I thought was: 

How can a person be able to paint over a masterpiece?
Or without being a masterpiece.....
How can someone paint over the work of another person?I understand that were other times, and of course performers hadn't enough material to paint their works.
But I think that there is an unbreakable and essencial rule to all this:
Do not destroy the work of another person.

And now, we have got two masterpieces in one:
Giorgio Vasari and Leonardo da Vinci.Two italian Renaissance artists that revolutionized the culture:

Vasari is considered creator of the ideological foundation of the art-historical writing.
Da Vinci, one of the greatest painters of all tine and perhaps the most diversely talented person ever to have lived. A genius.

http://www.bbc.co.uk/news/entertainment-arts-17337752