An old man went to the doctor. He had problems with a terrible pain in his leg.
“I am afraid, it’s just old age”, replied the doctor, “I can’t do anything about it.”
“That can’t be true!” replied the old man, “You just don’t know what it is”.
“How can you possibly know that I am wrong?” asked the doctor.
“Well it’s simple,” the old man replied, “my other leg is fine, and it’s the exactly same age!”
