Okay, so when I see a color as brown everyone else (excluding colorblind people) can also see that as brown because they learned that to be called brown. Except what if their brown is actually my green and my green is their brown? Everyone could be seeing things differently even though we all call it a certain color because we grew up with it. Black is a dark color and white is a bright color but white could be learned as dark and black as bright in my eyes but not in other peoples. What?