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Matthew Barsalou

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Root Cause Analysis, Ishikawa Diagrams and the 5 Whys

Root cause analysis (RCA) is a way of identifying the underlying source of a process or product failure so that the right solution can be identified. RCA can progress more quickly and effectively by pairing an Ishikawa diagram with the scientific method in the form of the well-known plan-do-check-act (PDCA) cycle to empirically investigate the…


Don’t Let Sleeping Dogs Lie

Many years ago I worked in industrial security; I spent many nights patrolling an automotive assembly plant. During this time I would occasionally find flyers written by somebody who called themself the “Sleeping Dog.”