20/20指的是使用斯內倫視力表測視力時的正常視力水平。
hindsight is 20/20
- (俗語) 事後諸葛亮
2009, Joseph Grcic, Facing Reality: An Introduction to Philosophy, Revised版, Bloomington, IN: AuthorHouse，第 57 頁:Another common error dealing with memory is that of "hindsight bias." This is the tendency to exaggerate what could have been anticipated in the past. This is also known as "Monday morning quarter backing" or "hindsight is 20/20" where the "right" decision as to what should have been done appears to be more obvious now than it was in the past.- （請為本引文添加中文翻譯）
2023年7月30日, Gretty Garcia, 「Coco Gauff Is Still a Teenager, but Her Net Worth Reveals That She’s Already a Millionaire」, 出自 Cosmopolitan[1]:Honestly? If you would have told me that becoming a professional tennis player might net me a decent supply of free pasta, I would have never begged my mom to quit my lessons. 😭 Hindsight = 20/20.- （請為本引文添加中文翻譯）
