If you don’t know, who is Albert Einstein there is no need to continue. If you do, you may know that he did not received Nobel Price for his Theory of Relativity, more precise for none of them. With very small simplifications – first of them stated that the speed of light is always constant, and second – there is no difference between gravitation and uniform acceleration. So instead of spending time trying to answer why this happened, he just took it as basic assumptions. You don’t need to know, why TV and remote work to use them. This comparison does not discount Einstein’s genius, which made great discoveries from those sound easy postulates. It shows that sometimes having a simple, consistent to the facts axioms works better than efforts to solve problem directly.