I don't know. I think you need to start with the "world in a rectangle model" to build intuition. Then you can blow your students' minds with the possibility t

I don't know. I think you need to start with the "world in a rectangle model" to build intuition. Then you can blow your students' minds with the possibility that the "rectangle" is actually the unknowably massive timeline of the entire universe, from the Big Bang until its heat death, and all of our models and reasoning are conditional on some subset of that gigantic world-rectangle. In my opinion, the power of this philosophical leap is lost without the basic geometric intuition.