Hindsight is understanding something clearly only after it has happened. When you look back at a situation and suddenly see what you should have done differently, that's hindsight. The word comes from the idea of looking behind you (hind) with perfect vision (sight).

You've probably heard the expression “hindsight is 20/20,” which means that events always seem clearer when we look back at them. Maybe you studied the wrong chapters before a test, and afterwards you thought, “In hindsight, I should have checked what the test was actually covering.” Or perhaps you chose teams for kickball and later realized you picked too many players who preferred the same position.

Hindsight can feel frustrating because it shows us what we missed at the time. But it's also valuable: it helps us learn from experience and make better choices next time. A coach might review game footage and notice, in hindsight, where the team's defense was weak. Scientists often look back at experiments and realize what variables they should have controlled.

The tricky part about hindsight is remembering that you didn't have that clarity when you were actually making the decision. It's easy to be too hard on yourself for not seeing something that only seems obvious now.