Finding 01
18.4% of your week-8 “active” accounts are propped.
They log in, they play, and they read as retained. Their session initiation has migrated almost entirely onto system prompts — daily reset, expiring pass progress, squad invites they answer and never originate. Remove those and the model puts their survival at eleven days. This is churn that has already happened and has not yet posted.
The probe · run 06 Mar
If these accounts are genuinely propped, withholding one prompt class for a fortnight should separate their exit hazard from the matched control. It did, by 4.1 points. Had the two curves stayed together, the 18.4% would have been an artifact of how we defined a prompt, and the finding would have come to you withdrawn.