> Copilot has the ability to produce Quake's source code nearly by itself.
Was it fed the Quake source code while training? Then it's not producing that code, it's just reproducing it, like a fancy (but imperfect) copy machine.
I'm not sure it's accurate to say that the training source code is "compressed" in the parameters of the model, but certainly some approximation of the training source code is stored in the parameters.