The Four Dimensions of Knowledge

You can imagine the way I've often seen it done is that the old Carl Sagan thing where you imagine like something going through a MRI or something. Or you can imagine a four dimensional object, right? Right. You'd have to imagine that like the entire universe is kind of like a slice of something bigger and that a four dimensional being kind of peering into our universe would sort of see our full three-dimensional extent. Like they'd be able to see all your internal organs and stuff at the same time as the outside of your body and everything around you because they're just looking down on you in this three dimensional slice. There's an ongoing debate in the philosophy of math about whether