Yeah, Graham did mention a staircase, man. He brought up this concept of the Escher staircase, which is a cool optical illusion. It’s like this never-ending staircase that just keeps going down, and it gets you thinking about the nature of perception and reality. It’s wild how these trippy visuals can help us understand complex ideas, like gauge theory or whatever. You’ve got to see it to really grasp what he’s talking about. It’s a mind-bender!