“事后诸葛亮”，中文俗语，意思是指事后自称有先见之明的人、马后炮（be wise after the event; second guesser），带有贬义。
诸葛亮是三国时期蜀汉丞相（the Prime Minister of the state of Shu Han during the Three Kingdoms period），政治家、军事家、文学家、书法家、发明家，被认为是三国时期最杰出的战略家（the most accomplished strategist of his era）。
- 事后诸葛亮人人会做。
It is easy to be wise after the event. - 你也不过是事后诸葛亮， 干吗批评人家?
Why criticize other people when you once knew no better yourself?
