Think of generality as the result of back. Up close you see one worker, one case, one classroom. Step back and you stop seeing any single one; you see the whole crowd and what is true of most of it. The step back gives you three things at once: the quality of covering a wide area, the crowd you are now looking at, and whatever you can say from that distance — which is broad, and has no detail left in it.
From the word’s history
From Middle English generalite, from Anglo-Norman and Middle French generalité, from general + -ité, with influence from Latin generālitās. By surface analysis it is simply general + -ity: the quality of being general.
依據來源記載，這個字來自中古英語 generalite，再往前是盎格魯-諾曼語和中古法語的 generalité，也受到拉丁文 generālitās 影響。從字面拆開就是 general 加上 -ity，也就是「一般這個性質」，剛好就是這個字的核心。
Wiktionary entry “generality” (evidence packet etymology_text): Middle English generalite < Anglo-Norman / Middle French generalité < general + -ité; also influenced by Latin generālitās; by surface analysis general + -ity.
登入就可以看每一支怎麼連回核心畫面。