Notice the performance in the following description of Pollock at work:
>A dripping wet canvas covered the entire floor … There was complete silence … Pollock looked at the painting. Then, unexpectedly, he picked up can and paint brush and started to move around the canvas. It was as if he suddenly realized the painting was not finished. His movements, slow at first, gradually became faster and more dance like as he flung black, white, and rust colored paint onto the canvas. He completely forgot that Lee and I were there; he did not seem to hear the click of the camera shutter … My photography session lasted as long as he kept painting, perhaps half an hour. In all that time, Pollock did not stop. How could one keep up this level of activity? Finally, he said 'This is it.'
In many ways it mirrors the accounts of psychics or other frauds, many of whom are self-deluded and thus not frauds in the common sense. The lone genius, the strange process, the way the world falls away while he's at work, a flaw no one but the guru can keen - these are the type of things we seem to be wired adore. So we should be suspicious of any new tastes we acquire while exposed to them.
Once his work became popular, they became positional goods, like yachts or a diamonds, so we should be doubly suspicious of the tastes of those who paid for it.
Take a random person, get him or her to drip paint onto a canvas however they see fit. Create many paintings every day, save the ones that seem, by hap, to be the most pretty. I contend critics and buyers alike would not be able to reliably distinguish between the works of Pollack and the works of the random person. He created a new style of painting - one that happens to require no skill. I have no idea if he bought his own shtick, but I like the idea that he didn't.