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29 May 2024
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Created page with "{{a|systems|}}{{d|messes, problem and puzzles||n|}}A coinage of Russell Ackoff and distinguishing between situations having neither a well-formed question nor an answer (“'''messes'''”), those which have a clear question but not an answer (“'''problems'''”) and those which have a clear question ''and'' a determinate answer (“'''puzzles'''”). JC notes parenthetically that a bucket is missing here: those situations in which there exists an ''answer'' but not..."
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