In this book, we will explore the emulation of human thought, capable of dealing with uncertainties, ambiguities, and contradictions. The human thought can be expressed in rules. To handle uncertainties, ambiguities, and contradictions, we will use fuzzy system techniques, implemented by a fuzzy expert system. Expert systems are computer programs, designed to make available some of the skills of an expert to non-experts. The hundreds of edited works and tens of thousands of archival papers show clearly that this is a rapidly growing technology, where new discoveries are being published every...