Sometimes, you just can’t find them. You tell Paco that it is late and you are tired, so you are going home. He bids you good night as you walk off toward your car.
When you wake up the next morning to check the logs for that geocache, you discover that Paco had indeed found the cache first, and he noted in his log that he found it just a few minutes after you decided to go home.
You are not the FTF today.
To try again, start from the beginning.