Notes for
engineers.
Short, practical notes on the problems we work on — traceability, change impact, assurance and resilience. Written for engineers, not search engines.
ENGINEERING ASSURANCE
Change impact analysis: the first question every change should answer
What change impact analysis is, why it goes wrong on complex programmes, and a bounded practice for answering it well.
READ THE NOTE ENGINEERING ASSURANCERequirements traceability: why it breaks, and how to keep it intact
Why traceability decays on real programmes, and the practices that keep a requirements traceability matrix trustworthy.
READ THE NOTE ASSURANCE & RESILIENCESafety cases and assurance cases: arguing a system is safe enough
What a safety case is, how an assurance case combines argument with evidence, and the failure modes that make them weak.
READ THE NOTE