Boundaries of Feeling Dimension

> Have you ever tried looking behind your eyes?

< Nope. That's physically impossible.

> But think about it! What's the difference between perception you can see, and perception you cannot?

< Just because you know how seeing something feels in one defined area does not mean you can copypaste it into a different arbitrary "area". 

> Then what's feeling? What's seeing? It's all just nerve stimulations.

< ...