This reminds me of that old story. One, I have tried to live by.

There was an old man with a huge watermelon patch. Every day a group of kids would come over and steal a single watermelon. The old man was furious about the kids stealing his watermelons and devised a plan. He went out and posted a sign in his patch that said “One of these watermelons is poison. KEEP OUT!”

So, a day goes by, and no stolen watermelon. A week goes by no missing watermelons. The old man is just so pleased with himself and his success. But, then he wakes up after about a week and a half and goes to pick some watermelons, and notices that someone has put a smaller sign next to his. He walks over and the smaller sign simply says “Now there’s two”.