SH224: CCR Diver Goes Hypoxic on Surface – What Causal Reasoning Taught Me About Learning from Events

In this episode, we examine a near-miss incident involving a CCR diver who narrowly avoided a hypoxic event during a liveaboard dive. Using this real-life scenario, we explore the importance of understanding human factors and causal reasoning in diving, focusing on how fatigue, stress, environmental distractions, and system design can shape performance and decision-making. We discuss the dangers of hindsight bias, the need to learn from "work-as-done" rather than idealized procedures, and how moving beyond blame helps identify systemic issues to improve safety and resilience. Tune in to discover how these lessons can help you dive safer and smarter.   Original blog: https://www.thehumandiver.com/blog/ccr-diver-goes-hypoxic-on-the-surface   Links: “If Only…” documentary: https://www.thehumandiver.com/ifonly HFiD: Essentials class: https://www.thehumandiver.com/essentials-2025 HFiD: Masterclass: https://www.thehumandiver.com/masterclass-2025 More about the WITH model: https://www.thehumandiver.com/blog/don-t-just-focus-on-the-errors Dirty Dozen Pre-Splash Checklist: https://thedirtydozenexpeditions.com/s/THD_DD-Splash-Checklist-40.pdf Work as done vs work as imagined: https://youtu.be/vtgIwHrUWVQ?si=nKE--HgZPzMaJV7C Diving Talks; Heroes and Villains in Diving: https://youtu.be/gXUhFLK2j3M Video about the Linnea Mills case: https://youtu.be/3b1Mm8zXUow Sign up for LFUO courses here: https://www.thehumandiver.com/lfuo   Tags:  English, CCR, Gareth Lock, Incident Analysis, Just Culture