What were free form jazz, free form dance, and free form painting? All these expressions require some understanding of the medium they are working in certainly, but the improvisational jazz musician and dancer move away from structured scales and keys or choreography. Pollock's type of pure expression painting, rather than realist illustration, became important after realism had seemed to have been completely explored and exploited.
While Jackson Pollock was deliberate in his work, Pollock's paintings were not thought out. Instead, they were done in a pure sense of "now". He made no preliminary sketches nor worked out the design in advance, yet each of his paintings was unique. He discovered the key to full blown abstract expressionism by not allowing realism to influence his painting. If you are a painter or artist you may understand just how hard this is to do. Think about this: as an artist you are drawing, sculpting or painting something, even if it's a vision only you can see in your mind you are creating something that already exists somewhere. Pollock tried to transcend this basic instinct of the artist to create succinct images. Instead he created in a purely abstract way.
Pollock's paintings had rhythm, and movement. And they are simply interesting to view and experience, particularly when viewing the actual painting, not a reproduction of it. Many, though not all, art consignors like to view his work. Yes, anyone could create a Pollock looking painting, but are they really creating in the same way as Pollock? Even the most abstract of your child's painting is trying to depict something. Is it the way she sees a tree or how her cat looks to her, or even some fantastic imaginary place in her mind? These drawings or paintings may be beautiful and interesting in their own right, but they are probably different in approach than what Pollock was attempting to do. Sometimes his painting, as he said, "didn't work", and this was probably when he over thought, or realized exactly what he was doing.
I believe he indeed found a way to record his meditations. Consider this: Buddhist meditate by focusing on some one thing, until their minds are emptied, and they are not mindful of anything, thus putting themselves in a state where time and space are not recognized. This is how Jackson Pollock taught himself to meditate, through painting. Many painters talk about how God guides their hand and they find themselves in a zone as they create, where time flies by, or even seems not to exist. I would suggest they are in a deep state of meditation, and Pollock painted in this way as well. Pollock’s break through was that instead of creating a picture while in that state he rather recorded the event itself, and many art critics, and layman alike, realized the result was beautiful, fascinating, intriguing and worthy.