[cloverich]

I think Duolingo's main issue w/ Fluency is its just too easy to pass lessons. You can repeatedly miss a phrase, click on every word in the phrase (to get the translation), get it correct once, and now you've passed. You can get the entire tree Gold without actually _knowing_ the words. So if you want to get the most out of Duolingo, imho, you have to really force yourself to do your own review, and only consider it learned if you can repeatedly get through without missing any in a row or looking up any words. Its still got an upper limit, but I feel like (in Japanese) I"m learning it much faster than I was before.