The document discusses improving medical decision making training for students and residents. It proposes using simulations of common clinical situations to provide deliberate practice under pressure. Research showed trainees with more ICU experience made fewer errors in simulations. "War games" simulations improved performance for all groups to the level of experts after just three sessions. Critical incident interviews revealed experts primarily use recognition-primed decision making while novices rely more on trial and error. Mandatory simulations were proposed to evaluate basic competencies before residents treat patients independently.