Why do some skills decay much faster than others ?
I feel like the basic-skills maintain to be golden 24/7, but for example the lesson about colors in italian, I've done it 4 times (or so) now, keeps decaying and that's kind of annoying.. ? Like I get it, repitition is important, but repeating the sentence ''Compriamo una cintura marrone.'' 5 times a lesson is not that fun. (or useful) :(