You get phrases like “epistemic regime” – which he does explain – but you also get another reason to read Tolkien: textual ruins!
What? That doesn’t excite you? Check out the talk and you’ll see why it should!
This lecture deserves to be parsed out and thought over, in a longer post that basically says, “this is cool, and this was really cool! and Lord of the Rings! and that point was awesome!” but for now just watch it for yourself 😀