Animals that enter a pitfall trap are unable to escape. Some cave paintings show woolly mammoths in structures interpreted as pitfall traps. "Nepenthes rajah" is a carnivorous plant of the pitfall trap variety. The pitfall trap has evolved independently in at least two other groups. They are assisted by a gypsy boy, Pablo, whom they rescue from a pitfall trap. In some Hasidic schools, this pitfall of mystical escapism is avoided. Idris aims to avoid this pitfall by aggressively erasing unused terms. Laurel and Hardy avoided this pitfall because they continued making primarily visual films. They come in 2 main forms&colon; dry and wet pitfall traps. Another pitfall is where stereotypes may prejudice thinking. In order to avoid this pitfall in communication, people work together to share meanings. Another common pitfall is for a scrum master to act as a contributor. The only pitfall is cost, as insulated wire is often costlier than its bare counterpart. One pitfall to this method is that it does not account for fluid-surface interactions. The major pitfall of this method of measuring pressure is that you need X-rays.