Modes of behavior exhibiting some simple analogy and carried out quit unreflectively and without any basis in theory…. It may be noticed on any slittle-alley or bowling-green. A bowler aims and plays his ball, wishing it to run true and hit the jack. He watches eagerly as it rolls, nodding his head, his body bent sideways, stands balancing on the one leg, jerk over violently to the other side as the critical point is reached, makes as though to push the ball on with hand or foot, gives a last jerk-and the end is reached. Its hazards past, the ball rolls safely into position.