They are identical!
An old man goes to his doctor, complaining about a pain in his leg that doesn’t heal, and wants a diagnosis and explanation. The doctor checks out his leg, but can’t find anything wrong, so he gives the old guy a full physical exam, and still can’t come up with any possible explanation for the pain. The doctor hands the patient his bill and says, “I’m sorry, but the pain in your leg is simply caused by old age; there’s…
