The other thing to keep in mind is that when particles interact (or smoosh, as it were), certain things are conserved. For example, we have observed that electric charges are never created out of nothing and that they are never destroyed. The total electric charge of the particles before and after the smooshing has to be the same. Why is that? We don’t know. We don’t understand why these rules apply; we simply see these patterns in experiments and incorporate the rules into our theories.
