Notes

Reference notes on focus & quiet company

Short, honest pages — research first, product second. Written by the person who builds Lumie.

I built an app designed to get rid of you

Every incentive in the companion-app industry says: keep the user talking. Lumie's calls end themselves — on a timer, on purpose.

2026-08-13

Body doubling: what the research actually says

The 2024 ACM study of 220 people, the 2025 AI-body-double study, and the honest caveats on both.

2026-08-11

Body doubling without a partner: every option, compared

Matched video sessions, Discord rooms, study-with-me videos, AI companions — strengths and weaknesses, straight.

2026-08-11

Why camera-on body doubling doesn't work for everyone

Presence helps; being watched doesn't. An essay from the camera-shy side of the room.

2026-08-11

What is an AI body double?

A definition, the early evidence, what separates it from a chatbot — and what it is not.

2026-08-11