Welcome to Mnemosyne, a flash card program named both after the Greek goddess of Memory and a type of butterfly.
Mnemosyne makes it more efficient to study, focusing on the cards you're most likely to forget and not wasting your time on things you know well.
For that, Mnemosyne decides when to show you the cards, and you'll need to rate how well you remember them.
Let's look at the meaning of these ratings now.