Word decay rate
Does anyone know how fast words decay? Some times I feel like it's a constant struggle to keep my tree up to date. It's especially painful when 10 lessons or so all decay at the same time.
Also, when will Duolingo release the words list to all users again, so that I can see my word strengths?
I read somewhere that the words are supposed to decay according to spaced repetition/the forgetting curve, so words appear more often if you get them wrong, but don't quote me on that. If your lessons are decaying that quickly though, you might want to slow down for a couple of days and do more strengthening exercises.
And hopefully the words list will come back for everyone soon! They're a/b testing it now -- I'm lucky to be in the group that has it for French.