The Problem
What retention signals suggest, and why depth of use declines after the first 90 days.
Root Cause Analysis
The note accumulation problem — why Evernote becomes a write-only system for most users.
Opportunity Areas
Three AI-assisted interventions: resurfacing, weekly review workflows, and smarter onboarding.
Proposed Direction
Prioritized initiatives with rationale, sequencing logic, and open questions.
What I'd Validate First
The smallest test that would confirm or kill the core assumption.