It's interesting that the way you describe it, the world model itself is _not_ just a collection of words in our minds, and I have a small theory of my own that "thoughts" in our brains aren't actually words at all (otherwise animals which don't talk wouldn't be able to make complex decisions?), and the words that we "hear" in our heads and which we perceive as our thoughts are just a rough translation of these thoughts into words, they aren't thoughts themselves. It is also why it's sometimes really hard to put complex (but correct) thoughts into words, and especially hard to adequately compare complex ideas during a regular conversation: on the surface a lot of ideas (especially in software engineering) "sound" good, but they're actually terrible. And there's no better way to communicate ideas than to put them into words, which is probably what makes good software engineering extremely difficult.

Or maybe I'm just a little bit insane. Or both.