Imagine 4D world (and beyond)

I've written about another interpretation of 4D world, but it's actually 3D + Time (3 directions and time). But, now I'm working on the 4 driving forces scenario, and I'm interesting in Physics' 4D (which actually, it's 4 directions and [time(s)?]). So this post, we need to imagine the real 4D, not 3D+time like before.

from 1 Dimension to 5 Dimension

From 3D to 4D: Artist uses 3D printing to cast 'shadows' of 4D objects

Computer simulation on 4D: Miegakure

M-Theory and String theory

Before the Big Bang

Understand 10 dimensional universe

http://futurism.com/understanding-10-dimensional-u...