File // DR-07 // Attention Half-Life Sec 03 / Signal Decay
Rev 1.130426 Slide 07 / 14
Takeaway // readers don't quit — they drift out of range

Subscribers don't churn. They fade.

// Trace  ·  open_rate_by_weeks_since_signup
REC · 04:12
Weekly open-rate cohort · signups 2024-Q1 → present
Kept · read weekly Baseline · never opened again
80% 60% 40% 20% 10% 0% HALF-LIFE · WK 06 open-rate 31.4% (from 63.2%) WK 01 WK 02 WK 04 WK 06 WK 09 WK 13 WK 18 WK 24 n = 41,286 cohort signal · 63.2% → 8.4%
// Attention Half-Life
06.2wk
50% of readers · gone -2.1 wk vs 2023
// Silent Drift Rate
73%
never formally unsubscribe just stop opening
// Cohort Readout · Q1 2024 CH · 07
Cohort size41,286
Week-01 open63.2%
Week-24 open08.4%
Formal unsub04.1%
Source: Cohort telemetry, Amber Wire newsletter platform, 2024-Q1 → 2024-Q4 (n=41,286).
Amber Wire AMBER//WIRE 07 / 14
This is the Steins;Gate CRT design system, applied by Curio — a design-style library for AI agents. Full Steins;Gate CRT guide → designbycurio.com/learn/steins-gate-2011-crt