You could say that about a lot of topics. Heck you could say that chemistry is just an emergent phenomenon of physics. The benefit of taking such a class or re

You could say that about a lot of topics. Heck you could say that chemistry is just an emergent phenomenon of physics. The benefit of taking such a class or reading such a textbook is that these things have been studied extensively, we have good models for them, and it is useful to know because people are still doing fundamental research on it to this day or working on phenomena that are closely related.