An architect was very famous because he always ordered exactly enough materials for every building he built. He was very popular because he could build buildings at the lowest possible cost.
After ten years of perfect building, one of his men came to him when they had finished a 40 story building. "I have bad news," the man said "because we have one brick left over!" "Oh no!" the architect exclaimed, "My ten year perfection record is broken!"
Do you know what he did with the brick?
He threw it away!