Inevitability And Identity In The Possible World

Based on"Naming and Necessity", combined with the comments of other scholars’ comments, the paper interprets and discusses some important Concepts in the possible world, mainly on essentialism criteria and identity,and puts forward that there is no clear border between Rigid Designators and Descriptions.Then come to such a conclusion:We should discuss identity on the basis of cognitive network."Naming and Necessity" expounded the theory of essentialism. Kripke’s essentialism derived from Aristotle’s theory, his essentialism on individual and natural kind has important effect.The whole article consists of four chapters:The former three chapters of the paper give an explanation and comment on "possible world" theory,"inevitable" concept and "identity" theory in turn introduced in the book Naming and Necessity. Based on the former analysis, the Chapter IV mainly discusses about the problem Kripke absolutizing "identity". To some extent, I think "Rigid Designators" could be derigiding, and "Descriptions " could be "identified". They together become a "the cognitive net " in order to realize designation.As a node of the net, each of them could be replaced by other nodes. In such way, they could realize the "conflux".