Cramming subdivides everywhere then collapses. Spaced repetition maintains strategic detail.
Everything subdivides at once—maximum short-term detail. But without reinforcement, the quadtree collapses. Fine distinctions blur back into coarse categories. You knew it all... for about a day.
8 sessions, spaced by 3 days. Each review reinforces some regions, letting them stay subdivided. The result: sharp detail where it matters, efficient forgetting of the rest.
The Quadtree Metaphor: Memory isn't uniform—some topics need fine-grained detail (4 subdivisions deep), others just broad strokes. Spaced repetition keeps important areas sharp while letting peripheral knowledge gracefully compress.
Increase study sessions to see more regions maintain detail. Adjust spacing interval to find the sweet spot between review and forgetting. The threshold controls how much retention is "enough" to keep subdividing.