How to imagine four dimensions

The easiest way to go from 3D to 4D, is to first reflect on how we go from 2D to 3D. So for that, lets first go to 2D, so we can come back to 3D. Imagine a very large flat sheet of glass with a very small thickness. Then imagine someone snapping a collar onto your neck, fixing it at ninety degrees from…

The brain runs in four dimensions?

Uptil yesterday, I used to think that thinking in 4 spatial dimensions is a purely analytical play (and “Time” as the 4th dimension never seemed intriguing enough anyway). But I just finished reading “The Möbius Strip” by Clifford Pickover, and now I believe I am actually able to mentally and somewhat visually integrate at least some key concepts. Now I not only accept, but…