how do sororities decide?

[FSUZeta]

if pnms were the only ones doing the choosing, the ginormous chapters with the "most prestige", the ones deemed the most desirable before recruitment begins, would be the ones everyone wanted to join and the "sleeper" chapters would become nonexistant. how many times have we on gc seen that a pnms opinion of the chapter she is just dying to join changes as the recruitment week draws out. this is because they are required to visit all the chapters in the beginning and make multiple decisions throughout the week, while the sororities are making their own decisions. their opinions may change as their options become more obvious. it's not perfect, but for the most part, it works.

lets take it further. what if everyone who aspired to attend harvard just walked into the admissions office and said,"here i am...sign me up". or what if men and women could just walk up to someone they find attractive and say,"i'm going to marry you', and the suitee was obligated to marry them? why is it alright for harvard to choose who attends? why is it expected (at least here in america) that marriage is a mutual decision, but we in sororities should accept any and everyone who thinks they want to join?