In medicine we are faced with nearly 13,000 diagnoses, over 6,000 medications and over 4,000 procedures. The variety of clinical venues and numerous individual patient contexts creates tremendous complexity. Context is king in making the correct assessment. Misreading or missing one detail can change everything in the evaluation and treatment of a patient.
Medical practice isn't just the regurgitation knowledge and doing procedures. The critical component is having the understanding, judgement and cognitive skill to apply the knowledge and motor skills in the appropriate context. Metacognition is the knowledge and awareness of one's own thought processes. The more aware a medical provider is of their thought processes, their limitations and strengths, the more effective that medical provider can be.