Alan, I agree, it is not easy to do what was suggested on 60 minutes, and frankly I have no problem with the idea of tracing like the show suggested. I have studied Astronomy and it's history. For me, the evidence was pretty strong. It also reminded of me another 60 minutes episode where they highlighted some guy who does not actually do the work himself. He hires painters to create work he then signs and sells. $30,000 for one piece. His manager even cut one of this artist's (??) own pieces he did himself. Cut it to destroy it. Had it reached the market it would have devalued the artist"s other work. There is no longer a definition of art, except maybe in the eye of the beholder. Take care, Gregory david Stempel FIREFRAMEi m a g i n g