The human is responsible. How is this a question? You are responsible for any machines or animals that work on your behalf, since they themselves can't be legally culpable.

No, an oversized markov chain is not in any way a human being.

To be fair, horseless carriages did originally fall under the laws for horses with carriages, but that proved unsustainable as the horseless carriages gained power (over 1hp ! ) and became more dangerous.

Same goes for markov-less markov chains.