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Duolingo was founded by Luis von Ahn, a Carnegie Mellon professor, MacArthur Fellow, serial entrepreneur, TED speaker, and the inventor of CAPTCHAs, those annoying “challenge-response tests” many sites and apps use to prove we’re human and not a computer bot.
Two key examples? 1) translation exercises, and 2) matching / fill in the blank exercises.
Sadly, apps like Duolingo serve to normalize and reinforce this behavior. Incidentally, translation is very much within Duolingo’s D NA since the original version of the app was created to both teach learners and gather crowdsourced translations of sentences on the internet.
This helps prioritize development of your listening skills and shows you what you understand in real time with your ears versus what you can parse out word by word with your eyes.
While Duolingo does provide some input (listening and reading exercises) and an itty-bitty bit of output (typing and pronunciation exercises), this is a far cry from authentic input (e.g. reading manga or watching anime) or true output (e.g. speaking with a native Japanese speaker). These two factors―authentic input and true output―are ...
Such exercises are easy to design and grade, but they have almost no direct relationship with the actual skill that most people aim to master: speaking with real people. When you are face to face with another Homo Sapien, you do not use your finger to drag words around a screen.
Duolingo lets you leverage the power of “reverse learning”. If you are a beginning Japanese learn er, the standard “Japanese for English Speakers” course is a good place to start. But once you have a decent amount of 日本語 under your belt, I highly recommend checking out Duolingo’s English for Japanese Speakers course.