... , should I memorize the word indicators for necessary and sufficient conditions ... be detrimental, so memorizing the indicators and working on understanding the ...
"Few" does have a subjective definition but isn't the same as "some" and "many." Think of it this way: most is to all as few is to some. Negating "few" doesn't mean "none"; it means "not few," which could imply "many" or "some."