Have you guys ever had those dreams where your perception is 4 dimensional and then when you wake up you feel so blind/small/flat? I'm sure I remember waking up once thinking, "Ah, that's how the Klein bottle works" and then not being able to visualise it once I was fully awake.

Still, it's better than the 2 dimensional dreams - they're just dangerous. All very slicey dicey.

Sorry to be a little OT. Maybe lacking in sleep this morning.