Found a bit of popular science suggesting I'm on the right track about the origins. (I'm ignoring the Liberal/Conservative guff, that just detracts from the actual point and leads me to think less of the researcher.) I don't want to actually have to buy a copy of this, but it looks along the right lines.

The implication that overextending the generated rules without firmly checking against the generator's reasons leads to trouble - and is what often leads to trouble - is mine, but would, I'd hope, follow fairly obviously.