The same critique applies to the theory that art is self-expression. Expression is conveying something that is already there, while objective progress in art is about creating something new. Also, self-expression is about expressing something subjective, while pure art is objective. For the same reason, any kind of art that consists solely of spontaneous or mechanical acts, such as throwing paint on to canvas, or of pickling sheep, lacks the means of making artistic progress, because real progress is difficult and involves many errors for every success.
