Fuzzy logic

Fuzzy logic products were first developed in Japan - fuzzy camcoders, washing machines, microwave ovens, carburetors and so on. It works on a logic condition grey neither black (0) nor white (1). We can't put black and white labels on things, it is relative. Similarly about true and false. A damaged car is again a car. So most statements are indeterminate, grey, fuzzy and probable.

Cretan's liar paradox : A liar from Crete said that all Cretans are liars and asked if he lied. He seemed to lie and not lie at the same time.

Are you satisfied with your job ? , answer will be grey.

Betrand Russel's barber : There is only one barber in the area. A notice at the barber shop reads "I shave all, and only, those men who do not shave themselves". So who shaves the barber ?.

If he shaves himself, then by his sign he does not. But if he does not shave himself, then by his sign he does. He seems both shave and not shave himself at the same time.