Physics is our model. There may be something that exists outside of our model, but we can't claim to know with certainty the limits of whatever that is. And wh

Physics is our model. There may be something that exists outside of our model, but we can't claim to know with certainty the limits of whatever that is. And whatever it is, it's not physics. Is a statement that nothing can go faster than the speed of light not a model? And if not, how did we arrive at that knowledge? God? Direct experience of the speed of light?