I've recently figured out (like, in the past two years) that I don't see grays and browns like other people do. I seem to be gray/ brown color blind, if you will.
It makes me kind of wonder, what else don't I see the same as other people?
And then I came across this XKCD comic, which says exactly what I was thinking:
(Click to make it BIG.)
Which, if you think about it a little bit too much, actually illustrates exactly the opposite of my point, because if someone else out there was thinking the exact same thing about the world as I was, then maybe I really don't see the world all that differently.
And I thought, for just a moment there, that I was so special. (sigh)