I guess you can say that ariving at Maxwell equations or QED is an exercise in curve-fitting in some sense. In the end, it is the simplest set of rules that mat

I guess you can say that ariving at Maxwell equations or QED is an exercise in curve-fitting in some sense. In the end, it is the simplest set of rules that matches a set of observations. Similarly, the current model of the sun is the simplest model that explains some observations (neutrino flux, the fact that some stars seem similar spectroscopically, our knowledge from other branches of science, etc.). I see no fundamental difference between these two.