4 ms·By definition "good" has to be rare, otherwise it wouldn't be good ...by polote 9y agoBy definition "good" has to be rare, otherwise it wouldn't be good ...jonex 9y ago"good: adjective, 2. having the required qualities; of a high standard." I don't see "rare" being a part of the definition.zo1 9y agoIt's not in the definition, it's in the distribution curve that is implied. Good = better than average = rarer than the average.