A Study On Williamson’s Demonstration Of Anti-luminosity And It’s Philosophical Implications

Contemporary philosopher Timothy·Williamson putted forward the famous "Anti-Luminosity principle" argument in his book Knowledge and it’s Limits.He took the process of the epistemic changes in "feeling cold" as an example, discussed the cognitive abilities and limits. Thus he putted forward his original view---“margin for error”. He applied the theory further into the “Anti-KK argument”, explaining that the margin for error” theory caused the failure of the iteration, is the main reason leading to the invalid KK principle. Williamson also applied his theory to the resolution of “unexpected examinations paradox”,compared three paradoxes---“tree height paradox”,“glimpse paradox” and “unexpected examinations paradox”,thinking that they are all in a same construction. In this way, the cause of the “tree height paradox " is also useful in “unexpected examinations paradox". By demonstrating the anti-Luminosity argument, Williamson suggested that most of our knowledge is inexact, and know by us to be so, denied the existence of the cognitive home at last.The article is based on above contents, sorting and analyzing Williamson’s argument, questions the cognitive view behind. Including the three propositions of the relationship above "know", "knowledge" and "belief" at the prospective of true knowledge; KK principle underlies and be eliminated in the premise which expressed “margin for error”principle; the problem of the reasonability and validity of analogy analysis above three paradoxes; asking the source of the “margin for error”theory at three different aspects; pointing out the contradiction of exact and inexact knowledge in Williamson’s theory and combining with both features of the development, summing up that the contradiction between them plays an important role in human cognitive development; leaving a negative evaluation to the two support theories of " unknowable truth exist" theory: the explain of "unexpected examination paradox" and "unknown paradox"; Affirming the existence of cognitive home.