[syncbehind]

> Duolingo creates dopamine hits under the facade of learning a language (which you never do).

If you're using duolingo as your only source for learning a language, yeah. It's a flashcard app when you get to brass tacks. You won't learn a language by only use flashcards.

As a supplemental tool, it's great.

[kirill5pol]

I think this is probably true for most things. Math, engineering, sciences; all need more than just memorization.

But some other topics it may be enough for purposes that you would want to use something like Plato for (history, etc)