The Manse has recently published a very nice rant on categorisation of magic where they discuss several approaches to the classification of spells and derive their own schools of magic, a neat and clean system of seven traditions with a rigorous naming convention. But there's a fallacy in this approach, I venture. It's tempting to create a well-defined, all-encompassing set of categories and just use them for everything. I will freely admit to doing just that many a time. But real-world syste...