AI isn’t really artificial intelligence, but simulated intelligence.  It works by statistically predicting what string of words will follow the previous string of words, based on a huge number of samples (the so-called Large Language Models) and a set of grammatical rules.  Thus, it is utterly unoriginal, doesn’t understand anything, and is so unreliable that AI researchers quip that it sometimes “hallucinates.”  Yes, I know AI is useful for things like company voicemail systems.  However, if you want to learn to think, it’s poison.  Try reasoning with a voicemail system, and you’ll see what I mean.

But AI is getting so good!  It sounds just like real writers!  Well, it does sound like a certain subset of real writers:  Unoriginal ones.  The reason why it can mimic them so convincingly is that they compose in pretty much the same way that it does.