Agreement: a new perspective of the fuzzy logic foundations

In this paper, some aspects of the human reasoning process, such as commonsense knowledge, uncertainty and approximate reasoning are discussed. A new way to approach these concepts-the point of view of agreement-and the relationships among them are addressed. It is shown that the concept of agreement provides a framework for the development of a formal and sound explanation for concepts (e.g. fuzzy sets) which lack formal semantics. Based on the notion of agreement, a multi-valued logic-logic of agreement-that has been proved to be sound, was developed.