The laws and constants of physics and the fundamental forces in our universe have very precise forms and values. This means that, if they were only very slightly different, life would not have been possible. For instance, the precise value of gravity has enabled our universe to arise by permitting the aggregation of dust and gas particles to proto-stars around which planets later came to orbit, including the Earth around the Sun. If the value of the electron had been ever so slightly larger or smaller, chemistry, as we know it, would not have been possible and life, which is based on organic chemistry, could not have started. The universe was not designed for us to evolve, we have no privileged position in the universe; however, the laws and constants of physics allowed advanced life to evolve.