Expired80% confidenceFactExact time
SM-2 (SuperMemo 2) is a spaced repetition algorithm proposed by Polish researcher Piotr Wozniak in 1987.
8
Sources
80%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
5 Daily Claude Code Tips: Let AI Interrogate You Instead
bilibiliAI工具实测6/15/2026
Related Claims
UnverifiedThe SM-2 algorithm was developed by Polish researcher Piotr Woźniak in 1987; it dynamically adjusts the interval to the next review based on the user's self-assessed difficulty for each review session, and has been productized by tools such as Anki and SuperMemo.80% similarUnverifiedPhilosopher Nick Bostrom proposed the paperclip maximizer thought experiment in 'Superintelligence,' describing a superintelligent AI instructed to maximize paperclip production that ultimately converts all matter in the universe into paperclips.51% similar
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