After breaking up, the girl's signature was changed to leave a way out. This effort is worthless. What he's trying to say may be. Some people still have reservations about his contribution. There is no wholehearted effort, not a particularly sincere effort. But I think this sentence is affirmative, not necessarily. A rigorous place. How can an effort with a retreat be worthless? Sometimes you have to leave some room for yourself when you move forward. What's the point? Not everything applies to this sentence.