[posterboy]

> You can analyze all that has ever been done, and come up with rules for describing and even generating music and art.

No, you cannot recognize anything as art before you haven't layed out the rules to describe art.

>But there is no guarantee that these will allow you to predict what makes future art

Prediction from Samples is covered by the sampling theorem, which theoretically holds for periodic signals and an infinite amount of samples, only. Although, in practice the output from my soundcard is rather fine, and facial recognition software works, too.