I’m new to this site (currently at level 2) and I think it’s a really effective learning tool. However I worry that I will eventually lose much of the knowledge I gain here. Does Wanikani ever review items from already completed lessons? I feel like I should maybe make an account on another spacial repetition website and at least enter the passed vocabulary items there to be able to always review them. Do you think that’s a good idea, or is that not necessary? How do people farther along the process make sure they don’t forget stuff eventually?