One of these every week
Filled in by him, in pen, in the last four minutes of the hour — not by you, and not on the computer. After a year it is the best thing either of you owns from this.
Session №
Date
What it was called
What we built
What broke
What the error said — copy it exactly
What I want to try next week
A drawing of it
Today was
Signed, the engineer
Signed, the assistant