In this podcast episode, Traci and Dave discuss a study that shows advanced process control (APC) can lead to a degradation of operator skills. The study found that after just a week of using APC, there was a 10% loss in skill level, and after two weeks, there was a 50% loss. The data suggests that operators should periodically run the plant without APC to maintain their skills. The Center for Operator Performance is researching interventions such as simulators, micro-learning and improved graphics to address this skill degradation. The integration of APC into the operator's role is also discussed as a shift in the nature of their work.