On Arrow's Impossibility Theorem

摘要: IN Social Choice and Individual Values other writings,' Professor Arrow envisages the community, when it is making decisions about economic policy, as a committee or direct democracy2 in which, to choose each member casts vote. It assumed that various proposals are put forward of community has definite preference attitude regard them. then enquires into suitability procedure by from ballots cast, might arrive at an ordering which had been voted on. Or, equally well, may be on some topic than policy arriving on, we still reaching decision. Arrow's theory definition suitable procedure, existence nonexistence procedure. The Impossibility Theorem shows general case apart restrictions members' preferences, no will able