It's great for learning facts and exploring a subject. Spaced repetition is fascinating. Especially in the realm of language learning. Vocabulary acquisition ca

It's great for learning facts and exploring a subject. Spaced repetition is fascinating. Especially in the realm of language learning. Vocabulary acquisition can be optimised by deciding the right order of words to maximise your ability to read a foreign language text. gwern has a link at the bottom of the article on modelling vocabulary lists as a travelling salesman problem. Feeding this into SRS Flashcard program is powerful. I guess one of the big problems ( if speed is your goal) is the creation of the cards themselves. The time to create the card is much greater than the time to learn the card and can be time a sink if you are trying to learn your first 3000 words of language.