top of page
Search


How Analysis of Competing Hypotheses (ACH) Helps Make Sense of Complex Accidents
When an accident is serious, tragic, and technically complex, the hardest task is often not collecting information, but making sense of competing explanations . Different witnesses see different things. Technical systems interact in ways that are not obvious. Early narratives can harden before the evidence is fully examined. NOTE: The MRH-90 incident is a real-world example of a tragic event. This ACH example is broadly accurate but is no substitute for the actual report find
4 min read


Using Analysis of Competing Hypotheses (ACH) in Litigation, Inquiries, and Contested Policy Debates
In litigation, coronial inquiries, and high-stakes policy disputes, the hardest problem is rarely a lack of information. It is the opposite: too many facts, too many narratives, and too many incentives pushing decision-makers toward a preferred explanation long before the evidence has been properly weighed. Once a narrative takes hold, everything that follows tends to be interpreted through it. Contradictory facts are minimised, explained away, or ignored. Confirmatory materi
6 min read


Conducting an Independent Risk Assessment in Support of a Lobby, Coronial Inquiry, or Litigation
When people hear the phrase risk assessment , they often imagine a spreadsheet, a heat map, or a list of obvious hazards ranked from red to green. In routine operational settings, that may be sufficient. In the context of a lobby effort, a coronial inquiry, or litigation, it is not even close. In these environments, risk assessment is not an administrative task. It is a discipline of structured reasoning under uncertainty , carried out in full view of sceptical decision-maker
4 min read


Risk Communication - Using Natural Frequencies
Following on from my previous post, Risk Communication Issues, if we want to understand why otherwise knowledgeable health professionals...
4 min read
bottom of page

