Have you ever revisited your childhood bedroom or an old grade school classroom? These places tend to look a lot smaller than you remember them, but they haven’t physically changed in size.  So why do they look different? 



The video above claims that you don’t see with your eyes, you see with your mind. Sight is created through associations between what your eye senses and your personal database of life experiences.  How you see things thus is dependent on your ecology, i.e. your interactions with others and your interactions with your environment.

This is interesting for a number of reasons.  The most obvious one is that this theory of sight postulates that everyone sees the world differently because everyone has their own unique life.   On a base level, you can say that there are no absolute colors.  The red I see is not the red that you see.  

The natural extension of this idea is that your perception of reality is based on the association between sensory information collected by your eyes, nose, ears, skin and tongue and your individual life history (as opposed to a perception of reality that is commonly shared amongst all people).