Originally Posted by

**Ellatha**
We know from biology that all living things are composed of cells, and we know from chemistry that all material things are composed of atoms (or subatomic particles). Because all living things are material, than all cells are composed of atoms. We know from physics that all physical things have a mathematical model, and that means all material and living things do as well (because they're physical). However, my question is whether there is any reason why this mathematical model was chosen? I have some general ideas, but, for example, why does spacetime follows a 4-dimensional Lorentzian manifold with a metric (3,1), rather than, say, a 5-dimensional Finsler manifold?

Basically, what I'm asking is what is the relationship between scientific theories and mathematical theorems?