[frank20022]

> Learning is a lifelong task and becoming proficient in a language does not mean you will stay proficient in a language

Agreed, but most people see it anyways as a journey from point A to point B, and then it's done. Also, most people just settles for good enough, not continuously improving.

> if people see their skills improving as a result of using the app then it doing its job.

Problem being that duo tricks you into believing you are learning when you indeed are not. I feel encouraged when I understand something for first time, not when the godam owl gives me a high five because I matched a word with a picture.

> Nothing can _make_ you learn other than your own willingness to do so

Well, I am really willing to be a world class piano concertist and astronaut. Doesn't mean I'll become one. Motivation + habits set the baseline, the mimimum needed, but they are not remotely enough. Success would be pretty darn easy then.