The Exponential Power of Doubling
Placing one grain of wheat on a chessboard and doubling it for every square seems simple, but it creates a massive mountain of grain. By the final square, you would have over 18 quintillion grains, far more than the entire world produces today.
This classic brain teaser demonstrates the rapid, deceptive nature of exponential growth. While the first few squares hold tiny amounts, the numbers quickly spiral out of control because each step multiplies the previous total. By the time you reach the 64th square, the total amount of wheat would cover the surface of the entire Earth. It is a striking lesson in how human intuition often fails to grasp the sheer scale of repeated doubling.
Source: Wheat and chessboard problem