Arnold's large-headed, stubby-limbed figures move solidly through a droll cautionary tale. Norman the apprentice has noticed that people always obey signs; when his boss takes a brief trip, Norman busily paints and distributes his own: ``No School Today''; ``Eat Your Hat''; ``Go Back Three Spaces''; ``Knock Heads.'' In a series of textless spreads, people follow these directions regardless of the silly results. Finally, every sign in town is angrily torn down—creating even worse confusion. Seeing the error of his ways, Norman scrambles about repairing the damage, earning forgiveness from the signmaker and the embarrassed townsfolk. O the perils of blind obedience! (Picture book. 6+)