One evening, I took my four-year-old son, Jacob, to McDonald's for a "guy night" dinner. As we ate our hamburgers, Jacob pointed to the buns and asked, "Daddy, what are these little things?"
I explained they were tiny seeds and safe to eat. He fell silent for a moment, clearly deep in thought.
Finally, he looked up with an idea. "Dad," he said, "if we plant these seeds in our backyard, we'll have enough hamburgers to last forever."