“How can you afford to share your best seed corn with your neighbors when they are entering corn in competition with yours each year?” the reporter asked.
“Why sir,” said the farmer, “Didn’t you know? The wind picks up pollen from the ripening corn and swirls it from field to field. If my neighbors grow inferior corn, cross-pollination will steadily degrade the quality of my corn. If I am to grow good corn, I must help my neighbors grow good corn.”