Skip to content
sahil.science
Questions
Papers
Topics
Syntheses
Almanac
About
C⁶
2026
← Questions
Source-derived question
Why does FSRS model stability and retrievability as separate quantities when scheduling reviews?
Learning Science
Memory and Retention
Spaced Repetition
Sources that address it
FSRS: Free Spaced Repetition Scheduler - Modern Algorithm Implementation
web
Related questions
How does the timing of practice change what we remember?
When does mixing different kinds of practice help us learn?
When should an intelligent tutor make learning harder?
Why do some things we learn stay with us?
How can a computational framework for modeling memory decay and retrieval probability be used to derive optimal spaced repetition schedules rather than relying on hand-tuned heuristics?
How do deficient-processing theory and study-phase retrieval theory differ in explaining why spaced repetition outperforms massed repetition?
How does FSRS's approach to modeling memory differ from fixed-multiplier algorithms like SM-2?
How does the re-encoding hypothesis explain why spaced practice produces stronger long-term retention than massed practice?