The document discusses simulation as a teaching technique. Simulation involves artificially displaying real-life situations through substitute displays with similar characteristics. It allows students to practice skills like communication through role playing without risks to patients. Simulation provides a safe environment for learning over patient care, mirrors real situations, and provides immediate feedback. It is a convenient method that can be used to train teachers by introducing them to problems, potential solutions, and allowing them to observe outcomes of their chosen actions. The roles of teachers in simulation include planning, facilitating, and debriefing.