When a Pueblo Indian does not feel in the right mood, he stays away from the men's council. When an ancient Roman stumbled on the threshold as he left the house, he gave up his plans for the day. This seems to us senseless, but under primitive conditions of life such an omen inclines one at least to be cautious. When I am not in full control of myself, my bodily movements may be under a certain constraint; my attention is easily distracted; I am somewhat absent-minded. As a result I knock against something, stumble, let something fall, or forget something.