Reminded me of the recent https://news.ycombinator.com/item?id=31047715
Isn't this just Anki (flash cards) with extra steps?
If you find a new word put it on a flashcard, and get exposed to it daily (spaced repetition) pretty soon you'll have learned it.
Reminded me of the recent https://news.ycombinator.com/item?id=31047715