Abstract:

Modern logic takes the criterion of validity as the source of its normative effectiveness. In fact, this criterion is not an effective method for evaluations of arguments in natural language. Moreover, in the respect of how to deal with issues related to the world of life, the neutrality of subject-matter, the ideal of formalization, the close-world assumption and logical monism, presupposed by the criterion of validity, all have some theoretical deficiencies. Therefore, it is difficult for modern logic to have a fruitful effect on the construction of and criticism at modernity.