@Wraithblade6Well that is the point of this. It is based on the idea that the world of magic is studied as a science. While I don't need everyone going and explaining the chemical reactions that allow you to make teleporting shotgun rounds. It is the idea that at the core people know how it works and that science and magic aren't separate.
Yes I agree we should presume that the characters have logical reasonings for why things work as they do, vague as it is in many cases. I more like the "vampirism is a disease" thing.