A number always tells the truth
- According to legend, long time ago, Sissa Ben Dahir, the Vizier of the court of King Shirham of India, worked diligently and invented a new game for his King. The King decided to grant Sissa the reward of his choosing. Sissa pondered carefully and requested the following from the King: One grain of wheat on the first square on the chessboard, two grains of wheat on the second square, four grains on the third square, eight on the fourth square, and so on… …without a mathematical model, King Shirham replied to Sissa: you ask so little and ordered his aides to estimate the total number of grains of wheat and give them immediately to Sissa. (But what Sissa was asking from King Shiram, gave a total of 18,446,744,073,709,551,615 wheat grains and this is equivalent to 147,574 million tons. As a reference, current (2019) world production is around 766 million metric tons).