Statistically speaking this is true but in reality your individual perception is what you see. My sister dyed her hair darker just slightly, i see her everyday, and I never noticed until she pointed it out and yet at school 10 people, mostly girls, noticed the difference. I can't think of the word right now but basically the amount of stimuli needed for someone to notice someting has changed is very different from that of others.
My teacher said it had something to do with the fact that men used to hunt, and needed to be able to track animals quicker and that women used to work in the fields and therefore needed to see colors (of the food) better.
So...
All this time...
I was secretly a man?
So I must´n been a man all this time, without knowing it
wrote a comment I didnt mean to post
-Kass