Overall great article, thank you!
The first paragraph, however, threw me off a little. Did van Gogh, Cezanne or Monet started a painting because they intended to educate, recall a past event or evoke an emotional response from others?
Artists like van Gogh created, at least as far as I’ve learned, because they had to: it was their life, their inner working, world and conflicts expressed and often their inner demons freed onto canvas, score sheet or paper, trying to cope and deal with their different perception of the world and the resulting emotional challenges, experiencing flow (as described by Mihaly Csikszentmihalyi as the mental state of compete absorption while creating) in the prices of creation.
The way you’ve phrased the paragraph (linking to not an entirely watertight article, imho) implied art to be an intentional activity with underlying mechanisms – made me think of the example of a GAN learning from 10,000 of paintings to produce it’s own, self-created 10,000-and-1 painting.
Art is more than that, and you alluded to that beautifully towards the end, when you wrote how scary and at the same time exhilarating it would be, to see the AI Caveman expressing itself (would it, at that point, still be ‘it’; it may have self-chosen the gender, so ‘expressing itself/herself/himself’).
Art is the ultimate test for strong-AI.