1. That remains a vague and fuzzy concept around Reunion Arena. 2. Appraisers often use extreme examples to demonstrate fuzzy concepts . 3. This gives rise to many fuzzy concepts . 4. Nowadays, happiness is a fuzzy concept and can mean many different things to many people. 5. It is a very fuzzy concept . 6. Since the 1970s, the use of fuzzy concepts has risen gigantically in all walks of life. 7. Again, this is so far from any proposal, just a fuzzy concept floating around at this point. 8. Engineers, statisticians and programmers nowadays often represent fuzzy concepts mathematically using fuzzy variables, fuzzy sets and fuzzy values. 9. The talk was of outreach, reinvention, guidance programs, cooperative compliance initiatives, and other warm and fuzzy concepts . 10. In this context, it is said that fuzzy concepts " lack clarity and are difficult to test or operationalize ". 
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