Learning Temperature
Every study session becomes a record: the location, the key points, your subjective and objective scores, material screenshots. Awaken computes the item's "temperature" — not a grade, but how well it still lives in your head.
The record computes a temperature, and the temperature decides when that item returns to your review queue. Scheduling and reminders belong to the review coach — you just keep learning.
From records to temperature, from temperature to schedule — retention is split into three things that run by themselves.