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Interesting article, personally I think this is more useful: https://www.supermemo.com/en/articles/20rules https://www.supermemo.com/en/articles/20rules
by misiti3780 9y ago
Interesting article, personally I think this is more useful: https://www.supermemo.com/en/articles/20rules https://www.supermemo.com/en/articles/20rules