it just is!
the more remarkable fact is that the a priori human intelligence is possible. Quarks gave us Mozart's Requiem and the Euler Identity.
So Ai is just the next machine in the production line of human ingenuity that began long ago with our superior cranial development and the evolutionary luck-out that is the opposable thumb
machines can easily out-compute us, they now get the rest. it's like early chess machines were loaded with tactics. now they get chess strategy too. better than we do.
i think that was a massive outcome of the recent Go experiment, when the machine won hands down
Just think of what AI is going to do when it rules the world.