Ever since the ancient times we have noticed that the universe works in a certain way and we try to interpret it. In doing so we create models which are based upon our the physcial world (and to some extent, even if very little, culture and religion). But the problem lies with the fact that because the universe works in only one way, it is impossible for us to arrive at a satisfactory model of how the world works based upon our existing knowledge of the physical world, which is incomplete. There for instead of trying to create models (like the string theory) we must place more emphasis on the mathematical equations rather than the theories. For example, if any other intelligent life form exists they need not neccesarily follow the same model (like the atomic model) and they might not know about electrons or protons. Therefore isn't our approach to understanding the universe in terms of models rather than equations fundamentally flawed?