I'm not sure determinism is where you want to draw the line. Just have the computer get a webcam pointed at a lava lamp. It's non-deterministic now. Or maybe

I'm not sure determinism is where you want to draw the line. Just have the computer get a webcam pointed at a lava lamp. It's non-deterministic now. Or maybe you want to still argue that that's ultimately deterministic. Okay, well, just have a person show up to the art computer, look deep within their soul, then type in a completely random, soulful, non-deterministic seed value into the art computer. Bam! Now the computer can create real art.