The problem is that we think of categories as this binary thing, when they're not. We recognize it with adjectives like "Tall"—most people wouldn't say "someth

The problem is that we think of categories as this binary thing, when they're not. We recognize it with adjectives like "Tall"—most people wouldn't say "something is either Tall or it's Not Tall". But the truth is, every word is like that. The solution isn't more and more rigid delineations—the solution is accepting that the borders are wide, and plenty of object straddle them. To bring up an even more argued about example—is a hot dog a sandwich? Some people say yes, some people say no, but the answer can be (and most likely is) "kinda".