A drill, simulation or scenario gives workers an experience. The debrief determines whether they leave with a clearer mental model, a corrected assumption and a decision they can apply when the real job becomes difficult. The crew has just completed a simulated confined-space rescue. The entrant was removed, the rescue team stayed within the exercise time and nobody violated an obvious rule. The trainer gathers everyone and asks, “How did that go?” One participant says it went well. Another mentions that radio communication was confusing. The trainer reviews three mistakes, repeats the correct sequence and releases the group for lunch. On paper, […]