Umbra Archive Archive/Attrition Slide 14
Signal Loss

Participant attrition by lunar phase cohort 07

Retention Curve Cohort 07 Darkforest baseline
Drop-off peak
38%
Highest single-phase loss occurs between full moon and waning crescent.
+12% vs baseline
Signal recovered
62%
Participants who re-engage after the dark period retain at higher rates.
This is the Lunarpunk design system, applied by Curio Design — a design-style library for AI agents. Full Lunarpunk guide → designbycurio.com/learn/lunarpunk-dark-forest