Why are computers so good at the piano?

Question

It takes human a few weeks to learn a piece but a robot a few seconds.  Why is this?

Answer 1

Because robots are programable, and have perfect memory. All you gotta do is to download a program with pianoplaying skills and it's a done deal, while us human take a while to learn stuff.

Answer 2

Well, I just placed my laptop at my piano and told it to play.  Didn't do a damn thing.