Popis: |
That classical two-valued logic is ill-equipped to deal with reasoning involving vague concepts is quite evident now. One instance of the inadequacy lies in that the so-called Sorites and other paradoxes [Cargile, 1969; Dummett, 1978] emerge when classical rules of inference are applied to premises involving vague expressions. But vagueness is all-pervasive in natural language expressions and strangely, through such an inexact medium we communicate, reason and take decisions in everyday life. |