Notes on Software Quality
This is a useful designer's notebook on software quality because it pushes quality out of the narrow "does it work" box and back into the felt experience of using a product. Speed, clarity, reliability, craft, and the absence of papercuts all matter, even when they do not show up as a failing test.
The Hacker News pushback is worth keeping next to it: quality is not only the absence of visible problems. It is also resilience under harder conditions, maintainability, security, and the cost of change. The mature version combines both views: users feel polish at the surface, while teams feel quality in how safely the system can keep evolving.