Counter-Errorism in Diving: Applying Human Factors to Diving

In this episode, Gareth Lock explores the critical role of situation awareness and risk management in diving, emphasizing the importance of building accurate mental models to anticipate and manage potential hazards. He discusses how assumptions, experience, and training shape decision-making, and highlights the distinction between managing risks logically and addressing uncertainty through mental shortcuts and emotions. Gareth shares how The Human Diver promotes non-technical skills, psychological safety, and a Just Culture, fostering a learning approach to adverse events. With new programs and instructors worldwide, 2025 promises more opportunities to improve diving safety and teamwork. Original blog: https://www.thehumandiver.com/blog/making-sense-now   Links: DAN Southern Africa webinar: https://www.youtube.com/watch?v=TSeKQidAZZA&t=547s Upcoming Face to Face courses: https://www.thehumandiver.com/hfid-level-2#section-1637697699737   Tags:  English, Decision-Making, Gareth Lock, Situation Awareness

In this blog, Bart Den Ouden shares a personal experience highlighting the importance of psychological safety, vulnerability, and human factors in diving. While teaching a rebreather instructor course, Bart forgot a critical piece of equipment, turning the oversight into a teachable moment. He emphasizes that instructors, as humans, can make mistakes, and fostering open communication and trust among divers is essential for safety and learning. By reflecting on errors—intentional or accidental—divers can improve team dynamics, decision-making, and preparedness, creating safer environments for themselves and others. Original blog: https://www.thehumandiver.com/blog/checking_each_other   Tags:  English, Bart Den Ouden, CCR, Human Error, Leadership, Psychological Safety, Rebreather, Teamwork

The first-ever Human Factors in Diving Conference, held on September 24-25, 2021, brought together 27 speakers from around the world to explore the application of human factors, non-technical skills, Just Culture, and psychological safety in diving. Spanning nearly 25 hours of content over two days, the event showcased a global virtual conference model using the LexGo Live platform, with a focus on interactive and engaging experiences. Despite challenges with ticket sales, tight deadlines, and technical logistics, the conference provided invaluable insights and demonstrated the potential of human factors to enhance safety across recreational, military, commercial, and public safety diving. The event highlighted both the successes and lessons learned, paving the way for future efforts to bring this critical knowledge to the diving community. Original blog: https://www.thehumandiver.com/blog/acorn-to-conference   Links: Conference website: https://www.hf-in-diving-conference.com/ Youtube channel: https://www.youtube.com/@thehumandiver863 LexGo platform: https://www.lexgo.work/ Marketing advisors: https://www.linkedin.com/in/rosconkie/ and https://www.linkedin.com/in/mickeywilsonfirestarter/   Tags: English, Gareth Lock, Human Factors

Accidents in diving, and life, rarely stem from a single "root cause" but rather from a complex interplay of factors—technical skills, context, randomness, and non-technical skills like communication and decision-making. This episode explores how cognitive biases, such as the fundamental attribution error, often lead us to blame individuals rather than considering the broader system in which events unfold. Drawing parallels from diving, surgery, and other high-stakes environments, we discuss the importance of understanding the full context, embracing feedback, and focusing on interdependencies to improve safety and outcomes. Tune in to challenge your assumptions and expand your perspective on risk and decision-making. Original blog: https://www.thehumandiver.com/blog/the-root-cause-of-an-accident   Links: Fundamental attribution bias: https://gue.com/blog/the-role-of-agency-when-discussing-diving-incidents-an-adverse-event-occurs-an-instructor-makes-a-mistake/ The rise of human factors paper: https://europepmc.org/article/med/31183182#free-full-text   Tags:  English, Gareth Lock, Incident Investigation, Investigations

In this episode, Gareth Lock delves into the nature of human error, exploring concepts like slips, lapses, mistakes, and violations through the lens of safety research and diving experiences. Drawing on James Reason’s work, Gareth explains how understanding errors and violations—whether unintended or situational—can foster learning, reduce outcome bias, and improve safety systems. By openly discussing mistakes, instructors can lower authority gradients, increase psychological safety, and promote a Just Culture where errors are seen as opportunities for growth rather than blame. Tune in to learn how these principles apply to diving and beyond. Original blog: https://www.thehumandiver.com/blog/mistakes-errors-words-have-meaning   Tags: English, Decision Making, Gareth Lock, Human Error, Psychological Safety

In this episode, Gareth Lock explores the critical role of checklists in enhancing safety and reducing errors in high-risk environments like diving, surgery, and aviation. Drawing insights from Atul Gawande's The Checklist Manifesto, Gareth highlights how properly designed checklists can prevent lapses, improve communication, and establish a culture of accountability. Despite resistance from those who view checklists as unnecessary or a sign of weakness, evidence shows their ability to save lives by addressing "unknown unknowns" and mitigating human error. Gareth shares personal experiences and emphasizes the importance of embracing checklists to ensure safety, reliability, and performance in diving and beyond. Original blog: https://www.thehumandiver.com/blog/surgeons-and-checklists   Links: Downloads and Transcripts of Atul Gawande’s lectures: http://www.bbc.co.uk/programmes/b00729d9/episodes/player The problem with not using checklists: http://aerossurance.com/helicopters/habits-kill/ The Checklist manifesto: https://cognitasresearch.wordpress.com/2015/01/17/only-20-of-surgeons-would-like-to-use-a-checklist-in-their-operations/0px%20!important;%22%20/%3E NHS checklist: http://www.nrls.npsa.nhs.uk/resources/?entryid45=59860 DAN study: http://www.alertdiver.com/checklists Checklist design: http://ti.arc.nasa.gov/profile/adegani/procedure-design/ Chain of events of things going wrong (1): http://silentdiversion.blogspot.co.uk/2015/01/human-error-dont-blame-rebreather.html?spref=fb&m=1 (2): https://www.navytimes.com/news/your-navy/2018/06/05/navy-officer-35-dies-in-off-duty-diving-mishap/   Tags:  English, Checklists, Gareth Lock, Human Factors

In this episode, Bart Den Ouden reflects on the importance of mastering the basics before taking on advanced challenges, using ice diving as a vivid example. During a rare opportunity for ice diving in the Netherlands, Bart observed several instructors rushing into instructor-level ice diving certifications without adequate experience. Drawing parallels with the Dunning-Kruger effect and highlighting the risks of "unknown unknowns," he emphasizes the dangers of overconfidence and taking shortcuts in training. Bart challenges dive professionals to lead by example, prioritize safety, and ensure they truly earn their certifications, reminding us all to slow down and build skills step by step. Original blog: https://www.thehumandiver.com/blog/run-before-walk   Links: Micheal Thomas’ blog for TDI: https://www.tdisdi.com/tdi-diver-news/slow-down-young-fella-attitudes-in-technical-diving/ Dunning Kruger effect: https://vimeo.com/223029249   Tags:  English, Bart Den Ouden, Decision Making, Instruction, Leadership

In this episode, we explore the critical role of leadership and decision-making in diving safety, using a real-life story about a young instructor, “Jack,” who made a risky dive on a rebreather he wasn’t certified to use. Despite his confidence, Jack’s actions reflect dangerous cognitive biases like overconfidence, outcome bias, and normalization of deviance, shaped by a culture of cutting corners in his early training. Through this cautionary tale, we highlight the importance of setting the right example as dive leaders, understanding the consequences of our actions, and promoting a safety-first mindset. Tune in to learn why responsible leadership and listening to feedback are vital for creating a safer diving community. Original blog: https://www.thehumandiver.com/blog/lead-a-horse-to-water   Tags:  English, Bart Den Ouden, Decision Making, Situation Awareness

In this episode, we explore how listening to your inner voice can be a lifesaver, both in diving and everyday life. Bart Den Ouden shares his personal journey of uncovering severe heart issues despite passing regular diving medicals, emphasizing the importance of recognizing warning signs and overcoming cognitive biases like denial and confirmation bias. We also discuss a diver’s near-fatal experience with immersion pulmonary edema (IPO) and how quick action and a well-equipped facility saved their life. These stories highlight the critical role of self-awareness, preventative measures, and teamwork in planning to fail safely—whether under water or on land. Listen in to learn why trusting that “little voice” could be the key to staying alive. Original blog: https://www.thehumandiver.com/blog/plan-to-fail-safely-part-2-passing-the-test-doesn-t-say-it-all   Links: Angioplasty and Stent: https://www.nhs.uk/conditions/coronary-angioplasty/what-happens/ HSE Medical requirements: https://www.hse.gov.uk/diving/medical-requirements.htm IPO (IPE): http://www.ukdmc.org/medical-conditions/immersion-pulmonary-oedema/ BMJ article: https://heart.bmj.com/content/80/6/537 DAN article: https://www.diversalertnetwork.org/health/heart/cardiac-health   Tags:  English, Bart Den Ouden, Cognitive Biases, Decision Making, Medical

In this episode, we delve into risk management and decision-making in diving, exploring the difference between personal and professional responsibilities. Using a case of a divemaster tasked with guiding divers on a challenging wreck dive, we examine the complexities of managing hazards, understanding acceptable risks, and the impact of assumptions and biases. The conversation highlights the importance of preparation, critical thinking, and a proactive approach to safety, while acknowledging the challenges of balancing rules with real-world scenarios. Ultimately, we discuss how diving professionals can navigate these grey areas, fostering safer practices while maintaining the adventurous spirit of diving. Original blog: https://www.thehumandiver.com/blog/who-owns-the-risk-in-diving   Links: HSE Terms: https://www.hse.gov.uk/managing/theory/alarpglance.htm Normalisation of Deviance video: https://vimeo.com/174875861 Work as Imagined vs Work as Done: https://humanisticsystems.com/2016/12/05/the-varieties-of-human-work/   Tags:  English, Decision Making, Gareth Lock, Risk, Risk Management