Abstract

Taoism and the author of the I Ching, seems to believe there was a contradiction in this world. Priest Australian philosophers call this idea as a "double-sided theory of truth" , and made ​​a number of clear reasons to justify it. This article carefully describes the theory of truth advocated by the double-sided encounter all kinds of logical and philosophical difficulties. In resolving the logical difficulties, this diagnosis of a difficult lie, and examples of two ultra-consistent theory of the semantics of logic-LP on the relationship between the logical and semantic meaning on the FDE may Esperanto - to illustrate how a failure and ECQ prevent conflicts of "explosion." However, difficulties in resolving the philosophy, the paper then argues that the double-sided theory of truth, not only in explaining our beliefs about the world on this unnecessary, but also on the metaphysics of self-defeating a theory. Both Chinese Taoists and the author of Yi-Jing seem to believe that there are true contradictions. Australia philosopher Graham Priest calls such a doctrine, the doctrine that there are true contradictions, "dialetheism"; he also gives explicit reasons for proposing such a view . I point out in this article some logical as well as philosophical difficulties that proponents of dialetheism are doomed to meet. To solve the logical difficulty, I first diagnose where the difficulty consists in, then illustrated how the undesirable ECQ can be invalidated by the semantics of some paraconsistent logic systems: the relational semantics of the system LP and the possible-world semantics of the system FDE. I argue, however, that dialetheism does not fare well when attempting to solve the philosophical difficulties. Specifically, I argue that dialetheism is not only unnecessary when explaining our beliefs about the world, it is also self-defeating