I'm half-convinced that the Rabbit was an ancient trickster god, and not an AI. Is AI even the correct term? If the Rabbit was a technological non-human intelligence, then surely it was never created (even by accident), and emerged/grew from the computosphere. No governments seemed to be aware of any other government having created it, and two of the nearly-main characters were special operatives tasked with knowing about shit like that and shutting it down before it could result in doomsday scenarios.

I suspect very strongly that had we gotten a followup or two, it would have turned out that the Rabbit had been around for a very long time before even the first transistor.