Maybe you should read my posts a little better.
Maybe I should point out that I don't use 'worth' referring to money but to artistic value. If you read the original link about the Picasso painting it says this: Picasso expert Pepe Karmel, reached in New York the morning after the sale, was waxing wroth about the whole affair. "I'm stunned," he said, "that a pleasant, minor painting could command a price appropriate to a real masterwork by Picasso. This just shows how much the marketplace is divorced from the true values of art."
Adding to this the whole "Bigger fool theory" then we can conclude that the worth of a painting is very distinct from its market price. I thought we were talking about those two things.
It is very plain to see that with items that are unique market price is not influenced by its actual value at all. Both the value in money and the value in art.
I mean, look back at the topic title. Of course this painting isn't worth 104 million because someone decided to pay that much for it.
Very strange since these are points you made...