Memory across model changes
Why the record stays put when the model underneath it changes.
Engineering notes
Decisions from the work.
Short notes on the current prototype: how it behaves, where it stops, and why the interface does what it does.
Design note
Making actions visible
Why saying a thing is done is not the same as it being done.
Practice, not self-criticism
Why a system that notices its own habits should not be told about them.
What it means to have seen something
One look proves nothing.