Artificial Intelligence is like that too - it can't produce "intelligence" because as soon as scientists figure out a way to do stuff that looks like intelligent behavior - say, speech recognition or winning at Jeopardy - that immediately stops being considered an example of AI.

Chess was considered "an AI problem" - and quite a hard one - back when nobody knew how to write a program that could play a good game. Now chess is beneath consideration because (a) programs can play it, (b) we actually understand how those programs work.