Is the Speed of Light Changing the Universe?

As far as i know, there is no minimum speed. You would have a completely different kind of universe. And it might affect the structure of matter. The size of that cone and narrowness of that cone is determined by the speed of light. I sae like if you changed the rules, the atoms and the corks and all that would just play, play differently. But they could still play. They could still play exactly, and they would play differently.