There is an ancient tale about a king who wanted to pick the wisest man among his subjects to be his prime minister. When the search finally narrowed down to just three men, he decided to put them to the supreme test. Accordingly, he placed them together in a room in his palace, and on the room door he had installed a lock which was the last word in mechanical ingenuity. The candidates were informed that whoever was able to open the door first would be appointed to the post of honor. Setting themselves to the task, two of the men began to work out complicated mathematical formulas to discover the lock combination. The third man, however, just sat down in his chair, lost in thought. Finally, without bothering to put pen to paper, he got up, walked to the door, and turned the handle. The door opened. It had been unlocked all the time!
Source: Three Minutes by James Keller, M. M., 1950
Contributed by: Zaady