Back in the old days I used physical flash cards I made myself. I was surprised to find that I couldn’t remember a word I was studying, until I saw a stain in t

Back in the old days I used physical flash cards I made myself. I was surprised to find that I couldn’t remember a word I was studying, until I saw a stain in the card, and recalled which answer was on the stained card. I think this is why these games don’t really work, they’re scared to have you get wrong answers, so they use the context to help. But as a result your knowledge is too superficial to be practical