CONTINGENT VS NECESSARY x偶然性VS.必然性 x This pair is concerned with a metaphysical distinction.形而上学区分 x Something is necessarily true insofar as it is true in every possible world; x Something is contingently true insofar as it is true only in some of the possible worldsCONTINGENT VS. NECESSARY  偶然性 VS. 必然性  This pair is concerned with a metaphysical distinction. 形而上学区分  Something is necessarily true insofar as it is true in every possible world;  Something is contingently true insofar as it is true only in some of the possible worlds