I think your point is fine, but I don't think we should say a root cause analysis of a rail accident is "trivial". For example, the most recent serious report

I think your point is fine, but I don't think we should say a root cause analysis of a rail accident is "trivial". For example, the most recent serious report from the UK has 113 pages, and detail on technical (friction, braking etc) and organizational issues just like an aircraft accident report: https://www.gov.uk/government/news/report-122023-collision-between-passenger-trains-at-salisbury-tunnel-junction https://www.gov.uk/government/news/report-122023-collision-b...