The conversation between human and AI assistant.
"What has passed is past" vs "What passed is past", which one is correct?
That makes sense. Do you know any other idioms related to the concept of the past?
Yes, there are many. One common expression is "yesterday is history, tomorrow is a mystery, today is a gift, that's why it's called the present." Another is "hindsight is 20/20," which means that it's easy to understand something after it has already happened.