One day Mrs. Jones went to have a talk with the minister at the local church. “Reverend,” she said, “I have a problem, my husband keeps falling asleep during your sermons. It's very embarrassing. What should I do?” “I have an idea,” said the minister. “Take this hatpin with you. I will be able to tell when Mr. Jones is sleeping, and I will motion to you at specific times. When I motion, you give him a good poke in the leg.” In church the following Sunday, Mr. Jones dozed off. Noticing this,...