I am reviewing the Handbook of Nature-Inspired and Innovative Computing for SIGACT News. It's a very interesting read. Each chapter, though, has the flavor, "This is my research area, and damn it's awesome!" So part of what I am trying to do is to separate out the hype, and make a sober assessment of the book's contents.
One chapter is on fuzzy logic and fuzzy systems, and how frikkin awesome they are. And maybe they are, I frankly don't know. The intuitive sense I've gotten from hanging around computer scientists is that fuzzy logic and fuzzy modeling of control systems, etc., are "dead." I don't know if that's true, though -- and, even if it is true, I don't know if it's true for a "good reason."
Would anyone like to weigh in here? What's the current status of research into fuzzy systems? Does fuzzification see real-world applications? Did it used to and people moved away because of problems? Or do people "in the trenches" use it all the time, and it's just that theorists have moved away from it? Or... something else? (I have no idea what is true.)
I will probably cite answers to this question in the book review, unless an answerer specifically asks me not to.