How is Pollock's work not random, exactly ? I'm genuinely interested in this answer.
I'm glad you asked that. First, I'd like to clear something up about method.
Considering that it looks like a 3 year-old threw a bunch of paint buckets on a canvas,
If you threw buckets of paint at a canvas, you'd get large globs of color, incredibly thick and quite wide with at least something of a radiating splatter pattern. Pollock didn't throw paint in bucketfuls at a canvas, he dripped it onto a large canvas on the floor, creating for the most part an intricate web of very thin lines.
There are a lot of ways to get color onto canvas, daubing, stippling, smearing, dripping, drybrushing, misting, etc. There are a lot of variations on any one of these. For Pollock's most iconic work, he used one of these exclusively.
These are all decidedly not Pollock.
http://www.google.com/url?source=im...8wc4dA&usg=AFQjCNEeyZvjJrFlViuxrNLqx1WNFiodOg
http://www.tate.org.uk/modern/exhibitions/cytwombly/images/img_autumn.jpg
http://www.askart.com/AskART/photos/CNY20061115_3442/29.jpg
His mark making is distinct, thin lines occaisionally pooling thicker, but not very extremely. It shows quite clearly the way his hand was moving, always quickly over the whole painting.
His compositions are are almost always diffuse and centered on the canvas. You'll notice that most of them, unlike almost any painting that came before him, have no weighted focal points. Even paint put on accidentally tends to have one or more centers of weight or activity the eye is drawn to.
There is a popular site that lets you "mimic" Pollock, notice that all of them that come up in a google search lack that diffuse composition and all have at least one hot spot.
On this one it's the tension between the large orange and black dots neart center.
Here the eye moves horizontally left to right to settle on the big black splotch on the far right.
To the extent that Pollock's paintings have focal points, it is the canvas itself. He uses variations in density that call to subtle attention the shape of the rectangle he's working with.
Check out the distribution in this painting.
Can you make out the borders of extra black along the top and bottom? \
Or see how all the marks are "contained" in this piece.
This time the border is opposite, relatively blank space instead of greater density.
And those two pieces lead to another non-random element. Color choice and palette. I'll admit, there are some pieces that, on the internet in crappy pictures, look like a mishmash of vomit color, but remember that you're looking at a photograph at 5% the size of something that has very tiny lines. The actual color in the more complexly colored pieces doesn't survive this compression well, and I advise you to see them in person. The choices in more restricted color pieces, like those linked above though, is clear. Compare it to the sickly candy colors in the online Pollock simulator, or your own little digital painting. The colors are distinct and harmonious.
There are many other ways that Pollock's work is patterned and deliberate, but this post is getting fairly long as it is.
I'll leave you with this, another dripped painting that, although it uses the same basic method, is clearly not a Pollock because it uses a different kind of markmaking, different kind of composition, and different kind of pallet and distribution of those colors.
Here