Counter-Errorism in Diving: Applying Human Factors to Diving

Gareth Lock at The Human Diver

Human factors is a critical topic within the world of SCUBA diving, scientific diving, military diving, and commercial diving. This podcast is a mixture of interviews and 'shorts' which are audio versions of the weekly blog from The Human Diver. Each month we will look to have at least one interview and one case study discussion where we look at an event in detail and how human factors and non-technical skills contributed (or prevented) it from happening in the manner it did.

  1. Aug 26

    SH305: Cause Reason. Excuse. Three Words Doing Three Very Different Things.

    This episode explores an important distinction that is often missed when discussing diving incidents: the difference between a cause, a reason, and an excuse. A cause explains what contributed to an event, a reason explains why a person's actions made sense to them at the time, and an excuse uses those reasons to avoid accountability. Understanding these differences helps us learn from accidents without simply assigning blame or letting people off the hook. The discussion shows why complex incidents usually have many interacting causes, why understanding local decision-making is essential for improving safety, and how separating learning from punishment leads to better conversations, stronger investigations, and safer diving for everyone. Original blog: https://www.thehumandiver.com/post/cause-reason-excuse Links: Accountability blog: https://www.thehumandiver.com/post/we-want-accountability RaDonda Vaught case: https://www.thehumandiver.com/post/the-structure-is-normal-the-scale-is-not Stop rules blog: https://www.thehumandiver.com/post/why-investigations-stop-where-they-stop Richard Cook’s diagram: https://www.thehumandiver.com/post/joining-dots-is-easy-if-you-know-the-outcome More about the RaDonda Vaught case: https://humanfactors101.com/2022/05/08/is-human-error-a-crime/ The eight question review: https://www.thehumandiver.com/post/eight-questions-about-maldives-accident “Learning” the same lessons: https://www.thehumandiver.com/post/why-does-nothing-change Tags: THD-English| THD-Learning, Incidents & Just Culture

    SH305: Cause Reason. Excuse. Three Words Doing Three Very Different Things.
  2. Aug 19

    SH304: Why Investigations Stop Where They Stop

    This episode explores why accident investigations often stop long before they uncover the full picture. Drawing on research from safety science, it argues that the “cause” of an incident is not simply discovered—it is shaped by who is investigating, what they are able to change, and what explanations their community accepts. In diving, investigations often focus on the actions of individual divers or instructors because these are the easiest problems to address, while deeper issues such as organisational culture, commercial pressures, and industry practices are left unexplored. The episode examines how different people can interpret the same event in very different ways, why every investigation helps shape the community’s understanding of safety, and why asking “Why did the investigation stop here?” can lead to far richer learning than simply accepting the reported cause. Original blog: https://www.thehumandiver.com/post/why-investigations-stop-where-they-stop Links: The most complete data on diving fatalities from 2008: https://pubmed.ncbi.nlm.nih.gov/19175195/ Blog exploring the purposes of running an investigation: https://www.thehumandiver.com/post/what-is-the-purpose-of-an-investigation LFEO program: https://www.thehumandiver.com/lfeo HFiD conference: https://www.hf-in-diving-conference.com/ What you look for is what you find: https://doi-org.ludwig.lub.lu.se/10.1016/j.ssci.2009.01.004 What you find is what you fix: https://doi-org.ludwig.lub.lu.se/10.1016/j.aap.2010.07.003 Blog about agency/organisation standards: https://www.thehumandiver.com/post/beyond-the-floor Speaking truth to power: https://www.thehumandiver.com/post/when-im-fine-isnt-true Structural conditions that produce decisions: https://www.thehumandiver.com/post/the-structure-is-normal-the-scale-is-not Other references: Blazsin, H. & Guldenmund, F. (2015). The social construction of safety: Comparing three realities. Safety Science, 71, 16–27. Lundberg, J., Rollenhagen, C. & Hollnagel, E. (2009). What-You-Look-For-Is-What-You-Find — The consequences of underlying accident models in eight accident investigation manuals. Safety Science, 47(10), 1297–1311. Lundberg, J., Rollenhagen, C. & Hollnagel, E. (2010). What you find is not always what you fix — How other aspects than causes of accidents decide recommendations for remedial actions. Accident Analysis and Prevention, 42, 2132–2139. Rasmussen, J. (1990). Human error and the problem of causality in analysis of accidents. Philosophical Transactions of the Royal Society of London B, 327, 449–462. Rochlin, G. I. (1999). Safe operation as a social construct. Ergonomics, 42(11), 1549–1560. Shreeves, K., Buzzacott, P., Hornsby, A., & Caney, M. (2018). Violations of safe diving practices among 122 diver fatalities. Int. Marit. Health, 69(2), 94–98. https://doi.org/10.5603/imh.2018.0014 van der Schaaf, T. W., Lucas, D. A. & Hale, A. R. (1991). Near miss reporting as a safety tool. Butterworth-Heinemann. Tags: THD-English| THD-Learning, Incidents & Just Culture

    SH304: Why Investigations Stop Where They Stop
  3. Aug 12

    SH303: The Structure of This Diving Tragedy Was Not Abnormal. The Scale Was.

    This episode explores why diving accidents are so often explained by individual mistakes instead of the wider conditions that made those mistakes possible. Using the case of a fatal medication error in healthcare alongside the recent Maldives cave diving tragedy, it examines how hindsight, blame, and our natural tendency to focus on people rather than systems can prevent meaningful learning. The discussion highlights how unsafe practices can become normal when they repeatedly appear to work, and why serious accidents often reveal long-standing weaknesses that existed long before the final event. Rather than asking "Who is at fault?", the episode argues that the better question is "What conditions made these decisions seem reasonable at the time?"—because understanding those conditions offers the best chance of preventing similar tragedies in the future. Original blog: https://www.thehumandiver.com/post/the-structure-is-normal-the-scale-is-not Links: Martin Anderson’s write-up: https://humanfactors101.com/2022/05/08/is-human-error-a-crime/ Andrzej Gornicki’s Eight Question Review: https://www.thehumandiver.com/post/eight-questions-about-maldives-accident Gareth’s blog about accountability: https://www.thehumandiver.com/post/we-want-accountability Assumptions and worn paths: https://www.thehumandiver.com/post/why-rules-get-broken Consensus is because people don’t want to disagree: https://www.thehumandiver.com/post/beyond-the-floor Conditions produce outcomes: https://www.thehumandiver.com/post/what-conditions Useful illegality in action: https://www.thehumandiver.com/post/why-rules-get-broken Tags: THD-English| THD-Learning, Incidents & Just Culture

    SH303: The Structure of This Diving Tragedy Was Not Abnormal. The Scale Was.
  4. Aug 1

    SH301: Eight Questions About the Maldives Dive Accident

    This episode examines the deaths of five Italian divers in the Maldives and a Maldivian military diver who later died during the recovery operation, using the tragedy to explore how Just Culture approaches accidents in high-risk environments. Rather than rushing to blame individuals, the discussion walks through the Eight-Question Review framework, which looks first at the wider system: authority, procedures, training, resources, organisational culture, operational norms, and the pressures influencing decisions. The episode highlights how experienced scientific divers can still face hidden competence gaps when moving into technical cave environments, how commercial and research pressures can shape risk-taking, and how safety rules may drift away from everyday practice over time. It also explores the dangers of hindsight bias and why meaningful investigations must focus on understanding how decisions made sense to those involved at the time, not simply judging outcomes after the fact. The central message is that accidents rarely come from one bad decision alone, but from interacting conditions within a wider system—and that real learning only happens when we are willing to ask difficult questions before assigning blame. Original blog: https://www.thehumandiver.com/post/eight-questions-about-maldives-accident Links: Blog about the Chac Mool deaths: https://www.thehumandiver.com/post/chac-mool-triple-diving-fatality Further reading on The Human Diver: Change your Language, Change the World They Lost Situation Awareness The Eight-Question Review — LFEO course Tags: THD-English| THD-Learning, Incidents & Just Culture

    SH301: Eight Questions About the Maldives Dive Accident
5
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About

Human factors is a critical topic within the world of SCUBA diving, scientific diving, military diving, and commercial diving. This podcast is a mixture of interviews and 'shorts' which are audio versions of the weekly blog from The Human Diver. Each month we will look to have at least one interview and one case study discussion where we look at an event in detail and how human factors and non-technical skills contributed (or prevented) it from happening in the manner it did.

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