Lotfi Zadeh and the Birth of Fuzzy Logic | IEEE Spectrum

“A multitude of other outspoken critics also disputed the theory of fuzzy logic, developed by Lotfi A. Zadeh in the mid-1960s. Some 20 years were to pass before the theory became widely accepted.[…] Even today some critics remain. But Zadeh never wavered. He had found himself alone in his scientific opinions on several earlier occasions.”