Why not? At the most simple level, the human brain also just takes a set of inputs and produces a set of outputs. There is a huge complicated function behind that, but complexity is no longer an issue thanks to modern compute capabilities.
To be honest it doesn't sound like you understand it. Or maybe look up the universal approximation theorem that says this is very much possible. Many people just have this dangerous tendency to put their own mind on a pedestal. That's how they justified their superiority over slaves or minorities in the past and it's how they will justify it over machines in the future.
That's so wrong, I don't even know where to begin. You should really look up the fundamentals of how these models work instead of listening to the "statistical parrot" nonsense that is constantly spewed around HN.
