Comment by CT4u8798

I have no clue about maths beyond extremely basic stuff, but am fascinated by this sort of thing, and I need pictures to understand stuff like this. What an excellent video. During it, when they introduced how you can map the 2D to 3 dimensions, my initial thought was "I wonder if this is how you could map 3D into the 4th dimension?". Then later they mentioned 4 dimensions. This is something I cannot visualise or really understand.