When you reach one of the boundaries you re-enter the space at a different boundary. It was one of the very few things I was able to understand. There's "conti

When you reach one of the boundaries you re-enter the space at a different boundary. It was one of the very few things I was able to understand. There's "continuity" between two points that, in the 3D rectangle representation, don't appear to have continuity. This continuity is possible because spacetime may be all warpy like that... You can't exit the space at the boundaries. The door out of the room walks you into the same room from a different door. eg. exit Face C at some point, and re-enter from Face A, because Faces C and A are aligned at that point. I'm lost beyond that point though.