The gardener digs a hole in the ground and throws in a seed and waters it and he hopes something comes up. Now, he knows generally what’s going to come up. He knows whether he planted an acorn for an oak tree or a tomato plant to get some tomatoes for the summer. But there’s a lot of details he doesn’t know. It may not grow at all. It may grow a little and then die. It may go wild. A chipmunk may eat it during the night. You don’t know.