What is a cube, but yet is not a cube?   The answer?   A "Tesseract".      Since the mid 1800's the concept of a cube which stretches into additional dimensions has existed.    Such an object would from any given normal view (3 dimensional) would be a cube.   But yet it exists in a 4th dimension as well.   This is a difficult concept to wrap your mind around because we exist in a universe that allows us to only experience 3 dimensions.   Those dimensions being height, width, and depth.   But for a moment, lets stretch our mind sand concieve of a universe which has more than just those 3 dimensions,