Understanding the Theory of Everything

I recently saw a video describing the way we try to understand multiple dimensions as being similar to Plato's Allegory of the Cave, and I thought it was a really neat comparison between ancient philosophy and quantum physics.

True, we may have trouble grasping the truths behind scientific processes when all we are capable of understanding are the "shadows" of what we can comfortably perceive. But even when addressing a difficult concept, like Garrett Lisi's Theory of Everything illustrated below in an eight-dimensional model, there is the possibility of comprehension.