Writing
What we learn while building Beatrice. Mostly evidence, occasionally an argument, never a listicle with a download button at the bottom.
Every shared-house app eventually adds a leaderboard, and a predictable share of couples uninstall it within the month. The research on why is more specific than the folk version, and it points at one feature rather than the whole idea.
Friendship
Task-shaped reminders work for tasks. A friendship is not a task, and the reminder is failing for a reason you can fix.
The house
What 128 studies on rewards actually found, and why it argues against ranking rather than against points.
Attention
Persistence and shame get bundled together in most software. They are separable, and separating them is most of the work.
The occasional note
One email when something is published or a real feature lands. No sequence and no course.
Your address is used for this list and nothing else.