Counter-Errorism in Diving: Applying Human Factors to Diving

This episode tells the story of a calm, well-planned dive that still ended with an unexpected case of decompression sickness, and uses it to explore how people react when things go wrong. Even when the dive was conservative, the team experienced, and everything seemed to be done “right,” a diver still became unwell — showing that not all risks can be controlled or explained. The episode looks at our natural need to find someone or something to blame after accidents, and how this search for causes often comes from fear, not facts. It explains how people try to protect their sense of safety by creating simple explanations, even when reality is uncertain and complex. The core message is that true safety in diving doesn’t come from believing we can control everything, but from accepting uncertainty, staying humble, learning from events without blame, and building resilience, awareness, and reflection into every dive.Original blog: https://www.thehumandiver.com/post/desperate-need-for-blameResources: Dekker, S., ’t Hart, P. (2010). Judgment and decision making in complex systems.Mezulis et al. (2004). A meta-analytic review of self-serving attribution bias.Baumeister (1999). Self-concept, self-esteem, and self-deception.Reason, J. (1990). Human Error.Dekker, S. (2014). The Field Guide to Understanding 'Human Error'.Skinner, E. (1996). A guide to constructs of control.Rotter, J. (1966). Generalized expectancies for internal versus external control of reinforcement.Lerner, M. (1980). The Belief in a Just World: A Fundamental Delusion.Hafer & Bègue (2005). The Belief in a Just World and Reactions to Innocent Victims.Ross, L. (1977). The intuitive psychologist and his shortcomings.Jones & Harris (1967). The attribution of attitudes. Tags: English| Sense-making, Decision-making, & Psychology

This episode explores why real learning in diving is harder than buying new gear or following checklists. It explains how divers, like firefighters and oil and gas workers, often struggle to change habits, question tradition, and speak up in teams, even when something feels wrong. The problem isn’t a lack of training or information, but culture — things like hierarchy, fear of blame, and not feeling safe to challenge more experienced people. The key message is that safer diving doesn’t come from more equipment or more rules, but from better communication, shared learning, honest debriefs, and strong non-technical skills like teamwork, awareness, and decision-making. Real change only happens when these behaviours become everyday habits, not one-off courses, and when teams create an environment where people feel safe to learn, ask questions, and improve together.Original blog: https://www.thehumandiver.com/post/would-you-speak-up-to-the-commanderLinks: If Only… documentary and workbook: https://www.thehumandiver.com/ifonly2026 HFiD: Conference: https://www.hf-in-diving-conference.com/Nic’s blog: https://www.thehumandiver.com/blog/what-are-we-pretending-not-to-knowScuba Adventures, TX: https://www.scubaplano.com/TekDeep Asia: https://tekdeep.com/author/marccrane/Part 2: https://www.thehumandiver.com/blog/the-practical-ways-of-bringing-hf-nts-into-divingTags: English| Operations & Procedures

This episode challenges the idea that more experience automatically means safer diving. Using research from aviation and real diving examples, it shows that what really matters is not how many dives you’ve done, but how you see and understand risk. Two people can face the same situation and make very different choices, not because of skill, but because of how dangerous it feels to them. The key message is that experience without reflection can lead to complacency, where risky behaviour starts to feel normal. Safer divers are the ones who think about their decisions, talk openly with their team, learn from near-misses and “no-go” choices, and keep questioning what feels routine. True competence comes from awareness, reflection, and honest communication, not just time underwater or the number of dives in a logbook.Original blog: https://www.thehumandiver.com/post/top-tips-for-technical-cave-divers-situation-awareness-risk-perception-is-a-critical-skill-experience-doesn-t-equal-judgementLinks: Normalisation of deviance blog: https://www.thehumandiver.com/blog/normalisation-of-deviance-not-about-rule-breakingDrinkwater, J. L., & Molesworth, B. R. C. (2010). Pilot see, pilot do: Examining the predictors of pilots’ risk management behaviour. Safety Science, 48(10), 1445–1451. https://doi.org/10.1016/j.ssci.2010.07.001Tags: English| Education & Content Type

Technical diving often looks like it’s all about planning, rules, and equipment, but the biggest risk factor is still the human. This episode explores how “Performance Influencing Factors” (PIFs) like fatigue, stress, environment, team pressure, and mental overload can affect even experienced divers, sometimes without them realising it. Using a real dive story, it shows how small human issues can stack up and lead to mistakes, even when procedures are followed. The key message is that safe technical diving isn’t just about good gear and checklists, it’s about self-awareness, teamwork, honest communication, and planning for human error. When divers understand their limits, support each other, and build safety margins into every dive, they don’t just dive better — they dive safer.Original blog: https://www.thehumandiver.com/post/top-tips-for-technical-divers-performance-influencing-factors-even-the-best-of-us-are-only-humanLinks: Showing vulnerability: https://www.thehumandiver.com/blog/the-challenge-of-psychological-safetyNormalisation of Deviance: https://www.thehumandiver.com/blog/normalization-of-deviance-risk-how-socially-accepted-drift-can-impact-your-divingTags: English| Education & Content Type

This episode explores why teamwork is a critical survival skill in technical diving, not just a nice extra. Using a real training story where a teammate caught a dangerous mistake during an emergency drill, it shows how even well-trained divers can fail under pressure and why a strong team can prevent small errors from becoming fatal. Technical diving involves higher risks, more complex equipment, and smaller margins for error, which means no diver, no matter how self-reliant, can be their own backup for everything. Effective teams plan dives together, position themselves deliberately, use clear and layered communication, manage ego and authority, practise emergencies as a group, and debrief honestly to improve the next dive. The key message is simple: great gear matters, but a cohesive, well-practised team is just as important, because in technical diving, your team is part of your life support.Original blog: https://www.thehumandiver.com/blog/Top%20Tips%20for%20Technical%20Divers:%20Teamwork%20-%20It%27s%20more%20than%20a%20back%20up%20planTags: mike mason teamwork

This episode explores how instructor decisions in diving are shaped long before an accident happens, often by habit, pressure, and past success rather than careful thought. Using real-world accounts from a fatal training dive in poor visibility, it shows how instructors often rely on fast, instinctive decision-making that usually works but can fail when conditions are complex, rushed, or risky. When dives end without incident, messy decisions often get hidden behind a “successful outcome,” which can lead to normalising higher levels of risk over time. The key message is to separate luck from skill, challenge assumptions, and judge decisions by how they made sense at the time, not just by the outcome. Simple tools like pausing to ask why you’re acting, what you expect to happen next, and whether the risk matches the benefit can slow thinking and improve safety. Reflective debriefs and open sharing of near-misses help instructors learn, adapt, and make better decisions before small issues line up into serious harm.Original blog: https://www.thehumandiver.com/blog/top-tips-for-diving-instructors-decision-making-the-big-ones-not-the-little-onesLinks: Learning in the Heat of the Moment: An Interview With Sabrina Cohen-Hatton‘Storytelling to learn’Tags: - english decision-making gareth lock instructors top tips