Enter the . This isn't just a container; it's a physical "brain hack" based on Spaced Repetition . Instead of reviewing everything every day, you focus your energy on the facts you actually struggle with. How the System Works
Review these every two days. Correct answers move to Box 3; wrong answers drop all the way back to Box 1 . leitner box buy
Everything starts here. If you get a card right, it "levels up" to Box 2. If you get it wrong, it stays put. Enter the