content: they are. that's what code is.  Well, in a general sense, yes. In more specific terms, that's not what's happening at all. What they're training is an Artificial Neural Network (ANN), which is backed by code but creates its own tunable heuristics. The "guidelines" being created in this instance are complete gibberish to anything but the ANN that generated them, and once they've been set it's usually easier to restart by training a completely blank ANN with a different set of data than it is to change the way an already-trained ANN works.