Just-in-Time Revision
Revision is most efficient when it targets material nearing the edge of recall. Reviewing everything on a fixed schedule spends effort on memories that are not yet in danger, while a just-in-time review interrupts likely forgetting.
The better revision session may begin by ignoring most of what you have learned. You are not supposed to review everything—only what you were about to forget today.
E1Catch the memory at the edge
Memories do not all become vulnerable at the same moment. A blanket review therefore mixes genuinely due material with items that remain readily available. The early repetitions consume time without addressing an immediate risk of loss. Just-in-time revision makes selection part of learning: identify what is approaching failure, retrieve or review it, and leave the rest alone. The timing follows the memory rather than the calendar, applying the logic of the Ebbinghaus Forgetting Curve to each item separately.
E1You need a way to detect what is due
The principle does not tell you, by itself, exactly when a particular memory is about to fail. Without some record or reliable prediction of what is due, “review just before forgetting” can become guesswork—and waiting too long means the material has already been lost.
E1Replace the chapter list with a due list
Tomorrow, do not revise an entire chapter. First test its individual questions, terms, or problems; review only the items you cannot retrieve quickly or that your revision system marks as due, then schedule each successful item farther into the future.
E1Episodes that teach this
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A Better Way To Learn and Remember Things - Spaced Repetition
· explained at 4:28
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"you are not supposed to revise everything... only supposed to revise the things you were just going to forget today"