The unvarying consistency of the actiom, tested a million times and always *true*. That makes it a *constant* IMO. What hypothesis? That the ice caps are melting at an accelerated rate? Pictures, thousands of them. nonsense. All actions follow a mathematical function, else there would be chaos. Correct, but the evidence shows that the assumption, when it holds *true* in all appropriate circumstances, which have been tested in all possible ways by the scientific method, is *constantly true*.