I once went to a lecture on consciousness by a philosopher and he discussed how the mind or awareness is geared toward perceiving differences or the new. He dou

I once went to a lecture on consciousness by a philosopher and he discussed how the mind or awareness is geared toward perceiving differences or the new. He doubted that you could actually be "aware" if all you were ever exposed to was a consistently blue expanse of sky with no clouds or variations in color. (this was years ago and his explanation was probably way better than my paraphrase) This is also probably related to the fact that your mind is automatically ignoring all sorts of repetitive sensory inputs that it learns is "normal". I've noticed this when I get new glasses with different frames and at first the new frames are noticeable but that quickly fades into the background. If you ever listen to classical music the theme or melody is not just repeated the same across the song but has variations then often returning to the original notes. Following that across the song is part of the appeal and just repeating it would be boring.