Six Brilliant Doubts: 1. If all the nations in the world are in debt; where did all the money go? 2. When dog food is new and proved tasty; who tastes it? 3. If the BLACK BOX flight recorder is never damaged during a plane crash; why is not the whole airplane made out of that stuff? 4. Who copyrighted the copyright symbol? 5. Can you cry under water? 6. Why do people say; You have been working like a dog when dogs just sit around all.