"Every perception is to some degree an act of creation, and every act of memory is to some degree an act of imagination."
-- Gerald Edelman, Second Nature: Brain Science and Human Knowledge
5 Introducing the mnemonic medium7 Introducing the mnemonic mediumIntroducing the mnemonic mediumHow can we develop transformative tools for thought？2020-10-18Journal
So far, this looks like no more than an essay which integrates old-fashioned flashcards. But notice the intervals indicated at the bottom of the cards:
The highlighted time interval is the duration until the user is tested again on the question. Questions start out with the time interval “in-text”, meaning the user is being tested as they read the essay. That rises to five days, if the user remembers the answer to the question. The interval then continues to rise upon each successful review, from five days to two weeks, then a month, and so on. After just five successful reviews the interval is at four months. If the user doesn't remember at any point, the time interval drops down one level, e.g., from two weeks to five days.