edit: or rather *tries to +rep and can't because he has already done so too much*
I've often thought about the idea myself, about what it might be like to live as a blind or colour-blind person for a day, and vice versa (because I know two guys who are colour-blind, actually). It's kind of hard to imagine, even, really. Sight is, after all, sucha fundamental thing for me. I wonder how a blind person would feel taking my place. "OH HEY I CAN SEE. BUT WAIT, NOW I HAVE PROBLEMS TALKING. ****"