 In the context of the relationship between fuzzy sets and many-valued logic, an approach toward a game-oriented look at logical validity was offered by Robin Giles. Starting in 1975, he proposed in a series of papers Giles (1975,1976,1979), and again in Giles (1988), a general treatment of reasoning with vague predicates by means of a formal system based upon a convenient dialogue interpretation. He had already used this dialogue interpretation in other papers, such as Giles 1974, which deals with subjective belief and the foundations of physics. The main idea is to let “a sentence represent a belief by expressing it tangibly in the form of a bet”.  The betting concerns the actual outcomes of dispersive experiments with different possible results of known probability. In this setting then a “sentence \(\psi\) is considered to follow from sentences \(\phi_{1},\ldots,\phi_{n}\) just when he who accepts the bets \(\phi_{1},\ldots,\phi_{n}\) can at the same time bet \(\psi\) without fear of loss”. 