A farmer noticed that every autumn, a tragedy played out in his cornfields. All summer long, families of field mice had made their homes among the growing plants. They ate and slept, they worked and played and raised their families. The mice imagined that those green fields belonged to them.
But then one day, at the end of the summer, the mouse community got an awful shock. The farmer entered the fields with his harvesting machinery, and all of a sudden those comfortable summer homes and food pantries that the mice had enjoyed came crashing down on their heads.