Field notes

The explorations are the full record. A field note is the short version for someone who does not know the lab: what broke, which signal hid it, how to reproduce it, and the check that would have caught it. A new note appears when a lesson has been measured, not on a schedule.

Notes

Also as a feed: /rss.xml

Green is not freshBetween May and October the lab's backups reported healthy at least four times while the copy was empty or weeks old. Every signal that said fresh came from something the backup job itself wrote. How that happens, a script that reproduces it in a second, and the check that catches it.15 Oct