The Universe Without Eyes

Anyways, what I wanted to wrote down was this:

1) When you close your eyes, how is it that you know where the different parts of your body are? When you close your eyes, you still feel your fingers, your hands, arms, body, legs, feet, yes. But more importantly, you still feel their relative position to each other - why/how? Is it only because you remember where your hand goes and where your foot goes, etc.? Well that sounds absurd does it not? Yes, you feel them, most certainly, but HOW do you feel RELATIVE POSITION? How do I know that when I close my eyes, my feel aren’t positioned above my head? How do I know that my hands aren’t 5 kilometers away even though I can feel them exactly as they were when I had my eyes open and saw them half a meter away from my eyes?

2) How is living in a 3D world relevant at all once you close your eyes? What does position mean when your eyes are closed? Distance, direction, dimension, how do I know that there are 3 dimensions when my eyes are closed? Well, I don’t, obviously. But then how to I begin to comprehend anything in 3 dimensions with a relative position to be when my eyes are closed? Yes, perhaps I’ve only seen things in 3 dimensions when my eyes are open, and therefore I only have experience of perception in 3D in “real vision”, but how has this got anything to do with the way I perceive anything when my eyes are closed? 

I’ll attempt to document the ideas I got from these questions later, but the bottom line is, how the hell do you even start comprehending anything in the normal human perspective when you haven’t got any eyes? What in the world is the universe even when you don’t have to see it through “eyes”?