Writing

Notes from building devices, networks and the software that has to be right about them.

26 Sept 2026 · 2 min

Twenty years of machines that lie

Field lessons from devices that answer ping while frozen, UPS cards that keep reporting, and screens stuck on one frame.

21 Aug 2026 · 2 min

A screen's log is not proof

What a signed playback record actually proves — and what it does not.