> It's how much the user feels they learned. > Gamification makes you feel you earned "something". And that's the whole point. The distinction between "learne

> It's how much the user feels they learned. > Gamification makes you feel you earned "something". And that's the whole point. The distinction between "learned" in the first paragraph and "earned" in the second is, IMO, crucial. At some point it becomes more about maintaining steaks and suchlike rather than actually learning a language. (Speaking as some who spent a lot of time on Duolingo.)