What does it really mean to become an expert in resuscitation and critical care?

It is tempting to think that expertise comes from accumulating enough facts, passing enough exams or simply spending 10,000 hours at work. In this episode, Iain Beardsell is joined by emergency physician, intensivist and medical educator Sara Crager to explore why expertise is less about how much we know and more about how we think.

Sara explains how experts develop high-quality mental models that allow them to organise information, recognise patterns and approach difficult clinical problems. Crucially, these mental models do not have to remain hidden inside the heads of experienced clinicians: they can be identified, explained and deliberately taught.

The conversation moves from the limitations of mnemonics and assessment-driven education to the value of deliberate practice, feedback and safe failure. Sara describes how an expert might organise the differential diagnosis of cardiac arrest into respiratory, haemodynamic and metabolic problems, rather than relying solely on a memorised list of Hs and Ts.

Iain and Sara then discuss Rapid Sequence, the gamified clinical-learning platform Sara created with emergency physician Ryan Ernst. Learners work through realistic cases in a simulated clinical environment, managing several patients while dealing with interruptions, competing priorities and the consequences of their decisions.

After each block, Sara and Ryan deconstruct the cases, make their clinical reasoning explicit and introduce mental models that learners can immediately apply when they try again. It is a cycle of practice, failure, teaching and repetition—without putting a real patient at risk.

They also explore why attention, storytelling and visual design matter in medical education; how “multitasking” may be better understood as rapid task switching; and what Sara has learned from turning an educational passion project into a working product.

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