On a beautiful Sunday afternoon in the midst of the French Revolution the citizenry led an attorney, a doctor and an engineer to the guillotine. …

They ask each if he wants to face up or down when he meets his fate. The attorney wishes to face the sky. They raise the blade of the guillotine and release it. It comes speeding down and suddenly stops just inches from his neck. The authorities take this as divine intervention and release the attorney.
The doctor comes to the guillotine next. He also decides to die face up, hoping that he will be as fortunate as the attorney. They raise the blade of the guillotine and release it. It comes speeding down and suddenly stops just inches from his neck. Again, the authorities take this as a sign of divine intervention, and they release the doctor as well.
Next is the engineer. He, too, decides to die facing up. As they slowly raise the blade of the guillotine, the engineer suddenly says, “You know… I think I see what your problem is …”