Hindsight is the ability to understand a situation or event only after it has happened. It is often referred to as '20/20 vision' because it allows one to see the past clearly. The term 'HINDSIGHT' is derived from the Old English word 'hindesight, ' which means 'looking back.' The crossword solution for the term 'hindsights' is 'moons, ' which refers to the idea that HINDSIGHT is like looking at the past through a telescope, allowing one to see things more clearly.