There's a really important caveat which is explicit in any law: "conditioned on all else being equal". In physics, we are able to isolate systems to the point

There's a really important caveat which is explicit in any law: "conditioned on all else being equal". In physics, we are able to isolate systems to the point where this caveat is true and the law can be experimentally validated. In economics, we do not get such affordances, because it is not and cannot be a "laboratory science".