Well all those things electrons, protons neutrons are just postulates that help physicists devise a model and give themselves results of behaviour that correspond to the actual seen behaviour....so its all just a made up model..........at the end of the day, if you design a working radio using the model, then you dont even care that the model was stricltly correct or not.........it helped you design your radio and now you get rich selling it.
Its like low frequency electrical theory such as ohms law, kirchoffs law etc is not strictly correct.....really maxwells equations are more accurate, but who wants to use maxwells when the easy model works to the point its required to work.