Model integrity
Provenance Has to Survive Every Copy
A converter that correctly refuses to invent provenance becomes a data-degradation engine the moment it runs over data that already has some. We shipped that, and measured it before we found it.
Resources
Engineering notes from building MBEstudio
Working notes on the engineering problems behind MBEstudio, written from what we have actually built and hit, including the parts that do not work yet.
Data isolation
Isolation Is Tested, Not Configured
A configuration flag named after a behaviour is a claim about that behaviour, not the behaviour itself. When isolation is a filter rather than a wall, the only evidence worth having is a write one tenant cannot see.
Configuration management
Evidence Is Only Valid for the Build It Measured
A container told us it was running one commit. Its image label said another. The difference was ten commits of work, and the only thing that caught it was a script that refused to believe either of us.
Electrical architecture
Harness Voltage Drop Is a Geometry Problem
The drop on a feed is decided by where the wire actually goes, not by how far apart its endpoints are. Rerouting an airliner’s harness through its airframe halved one feed’s drop without moving a part.