The doctor paused and said, “There was a master bear shooter in a village. He never missed a shot.
But one day he was in a hurry, and took his umbrella instead of his rifle by mistake.
When he encountered a bear, he still didn’t realize his mistake and pointed the umbrella and shot the bear.
The bear lay dead with a bullet in his heart!”
The old man said, “That’s stupid! The bullet must have been shot by another person.”
“That’s exactly right,” said the doctor.