|If we had defined this as "cable", then the cables we know|
would be something different
|Area A and Area B are the same color|
This piqued my interest a lot, because if you think about it all humans need some higher power to rule them in order to function. This power isn't necessarily God, it can be a politician, or some other kind of compass- ethical, emotional or logical- to point in a desired direction. Such as an author you are obsessed with or a singer who makes some kind of statement about rights/life or even expresses some arbitrary opinion.
Biologically speaking, this pattern can be found in our behavior, as well as the eye. Our eyes, as studies suggest, interpret colors based on a comparison the brain makes between the other colors in the room. So in short, the eye takes mental notes of a color and then figures out what another color is, based on the initial reference point.
Psychologically speaking, this pattern is what drives our desire to have a leader. This very same principle applies to animals that form packs. We need somebody to act as a role model, so that we, as humans, can see that our behavior is acceptable. By the same token, peer pressure usually has this much effect on people, because the meaning of "acceptable" actions is shifted within a group. If you see your close friend smoking and all your other friends do the exact same thing, then it is more likely for you to actually imitate the same action, just because your reference point are your friends. This becomes even more intense if you are asked to smoke.
With the same mindset, this is what makes us decide what is beautiful or not. We take a reference point- let's say a person we admire- and then we try to imitate their style. From then on, everything associated with this kind of style suddenly becomes what we call "appealing" or "beautiful".
Basically, as humans, our perception of the world is a mix of reference points serving as axes, for us to revolve around.