Fuzzy logic

It was introduced in 1965 by Dr Lotfi Zahdek, then Chair of UC Berkley’s Electrical Engineering Department, as a way of modelling the uncertainties of natural language. See Kosko (1993). In psychological terms, Pinker (1997: 101) explains human thinking as being fuzzy and being built on fuzzy logic … “In many domains people do not have all-or-nothing convictions about whether something is true.”