In this episode, we explore how human perception and assumptions can lead to critical errors, using real-world examples like the tragic 1994 friendly fire incident where two US helicopters were mistaken for enemy aircraft. These events highlight the dangers of "believing is seeing" and how expectations can shape our decisions under pressure. We connect these lessons to diving, where incomplete information and mental shortcuts can result in serious incidents. Learn how to reduce errors by validating assumptions, improving communication, and fostering shared mental models, helping to enhance safety and teamwork in high-risk environments.

Original blog: https://www.thehumandiver.com/blog/believing-is-seeing

Links: What You Look For Is What You Find paper: https://www.sciencedirect.com/science/article/abs/pii/S0925753509000137

Language can shape expectations: https://gue.com/blog/the-role-of-agency-when-discussing-diving-incidents-an-adverse-event-occurs-an-instructor-makes-a-mistake/

Tags:  English, Cave Diving, Decision-Making, Gareth Lock, Rebreather, Situation Awareness

In this episode, we discuss integrating Human Factors training into technical diving courses, inspired by a new program blending eLearning, hands-on skills, and real-world exploration. The program emphasized teamwork, leadership, and psychological safety, with the DEBRIEF model becoming a standout tool for improving feedback and team efficiency. Students embraced these concepts, leading to more effective learning and collaboration. Lessons learned included refining teaching methods, incorporating Human Factors into all course modules, and fostering a just culture. The result? Better divers, better teammates, and a better instructor. Tune in for insights on enhancing diver education through Human Factors.

Original blog: https://www.thehumandiver.com/blog/HF_Into_Archaeology

Links: Underwater Archaeology Society of British Columbia: http://www.uasbc.com/

DEBRIEF model: https://www.thehumandiver.com/debrief

The Essentials class: https://www.thehumandiver.com/HFiD-Essentials

Guy Shockey: [email protected]

Tags:  English, Debrief, Decision-Making, Guy Shockey, Leadership, Teamwork

In this episode, we explore the complexities of situational awareness (SA) in diving and why it's often only recognized as missing after an event has occurred. SA involves interpreting sensory data and predicting future outcomes based on experience. Experienced divers may notice subtle signs of danger, like coral movements indicating currents or rust falling in a wreck, while novices lack the knowledge to anticipate or respond. Distractions, limited mental capacity, or unclear information can divert attention from critical issues. Rather than focusing on "loss of SA," we discuss how effective briefings, experience, and deliberate focus can help divers pay attention to what truly matters underwater.

Original blog: https://www.thehumandiver.com/blog/cant_pay_MORE_attention

Tags:  English, Decision Making, Gareth Lock, Non-technical Skills, Situation Awareness

In this blog, a diver reflects on a simulated rescue scenario during a PADI Rescue Course, highlighting critical lessons about human factors in diving. The incident underscores the impact of high task focus, reduced situational awareness, and psychological stress, which led a student to run critically low on gas without asking for help. The writer explores contributing factors, including the challenges of operating in cold, low-visibility conditions, the pressures of performing under assessment, and the lack of a "just culture" where errors can be openly discussed and learned from. This real-life example emphasizes the importance of fostering psychological safety and vigilance in all roles during training dives.

Original blog: https://www.thehumandiver.com/blog/rescuer-and-rescued

Tags:  English, Communications, Decision Making, Gareth Lock, Just Culture, Psychological Safety, Situation Awareness

Pre-dive checks are essential for diving safety, but they’re often rushed or overlooked, especially on busy dive boats. Factors like time pressure, peer pressure, distractions, and overconfidence can lead divers to skip thorough checks, relying instead on past outcomes. However, regardless of experience, using a familiar checklist with your buddy is key to ensuring equipment works and everyone knows how to assist in an emergency. While dive boats may not always allow for perfect checks, taking time beforehand—at the dive shop or during the journey—to understand your buddy’s gear can mitigate risks. Dive Masters play a vital role in setting the standard by demonstrating thorough checks. Ultimately, effective pre-dive checks improve safety, reduce errors, and prepare divers for unexpected situations.

Original blog: https://www.thehumandiver.com/blog/checks-on-a-dive-boat

Tags:  English, Checklists, Decision Making, Mike Mason, Teamwork

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