Imagine a thought experiment: A is conducting a classical mechanics experiment (e.g. bouncing a ball on the table) and B is moving relative to A at speed so great that the table of A is contracted to the size of an atom. According to the postulates of special relativity, the physics of A and B must be the same. But A is using classical mechanics while B must use quantum mechanics. So, the sheer existence of quantum mechanics must necessary invalidate the postulates of special relativity. Any opinions?