I heard that you can get surgery to change it from single to double. Double lids, single lids, they're all lids at the end of the day.
Lol....nah i am very sure a certain group in da chinese have single eyelids ie like most of the hokkiens no offense yar but tats what i normally observe and japs have doubles man so i don think the people know japs well...Koreans arrr i think a lot of them used to not have it but mostly have it now since you could get it via plastic surgery, minor surgery just a slight nick near da lids...-cool
thats actuali true coz back in vietnam when i was there for a holiday my family went for a photo shoot and they stuck some plastic skin lookign thing on mums eyelid and it made her eyes look doubled
when i was young, i use to have one single and one double sometimes =P i forgot which one was which but they're both double now... i'm assuming that double looks better since you guys are willing to go thru some crazy stuff to get it =)