400
If a current art student throws paint at a canvass and calls the work art they are unlikely to make a name for themselves in the art market (or sell works of great value.) Jackson Pollock, the famous abstract expressionist artist threw paint at a canvass and claims millions of dollars per painting. Why are Pollock's works famous, but not the art student's?
Pollock was the first artist to become known for that style of painting.