N-UNCOUNT [oft with/inN]後見之明;事後聰明Hindsight is the ability to understand and realize something about an event after it has happened, although you did not understand or realize it at the time. 後見之明;事後聰明
With hindsight, we'd all do things differently.
有了事後的認識,我們都會以不同的方式行事。
Even with the benefit of hindsight, I doubt I would change anything if I had my time again.