Before revision: For example, to improve your memory through passive review, you learn in this way: you read a text today; to not forget it, you repeat it tomorrow and then you repeat 4 days later and then 8, 16, 32, 64, etc., days later.
After revision: For example, to improve your memory through passive review, an individual may read a text today; to not forget it, it is repeated tomorrow and then 4 days later and then 8, 16, 32, 64, etc., days later.