Driving down a country road, a man came to a very narrow bridge. In front of the bridge, a sign was posted: "YIELD." Seeing no oncoming cars, he continued across the bridge and to his destination. On the way back, he came to the same one-lane bridge, now from the other direction. To his surprise, he saw another YIELD sign posted. Curious, he thought, "I'm sure there was one posted on the other sid...
