An opinionated critique of Duolingo

>But the treadmill, used properly, is still significantly better than an extra 30 minutes sitting on the sofa,

That's right. Most of the criticism directed at Duolingo seems to be about unrealistic expectations of engaging with an app for 10 minutes a day. That is not going to get you to fluency, but it does beat doom scrolling on your phone.

Before I committed to study Japanese seriously I did about a year of Duolingo. I learned about a thousand words, maybe 100 kanji, I could follow parts of conversations and read easy sentences, and that is exactly what I expected from the effort I put in. In fact I was happy with what I got out of it. What it excels at isn't teaching you a language fast, it's that it keeps you going and has course material laid out for you.

I have a teen who's been using DuoLingo for French for a while but hit a ceiling with spoken language. I suggested to him to look around for voice chats with French speakers like maybe on Discord but it's a desert out there. Wonder if you have some experience with using these paid options to recommend. Would be neat if there could be something without a rigid course-like structure he could join occasionally for low-key conversation practice.

I agree with some aspects, and think the author perhaps misunderstood some others.

> If I collect 100 XP, what does it mean for my language skills? For that matter, why do I collect extra XP when I receive a potion? Can the XP I collect be used in a way to carefully guide me towards the specific language skills I would explore next?

Using XP to guide the user towards a particular path is an idea, but it's just not one that Duolingo uses. The purpose of XP in Duolingo is simpler: people like numbers to go up, so they get XP for using the app. It also enables an ecosystem of rewards; I'm generally not a competitive person, and there have still been days where I took a few more Duolingo lessons because I was close to completing a "daily challenge".

Similarly, friend streaks, leaderboards, etc, all have innately appealing hooks. They won't all appeal to everyone all the time, but one of them will appeal to someone some of the time. If they get you to practice for 5m a day more than you would've otherwise, I think they've served their purpose.

Broadly, I agree with other comments about expectation management and time commitment. Could you get yourself to a solid level of understanding in a new language only by using Duolingo? Possibly, but you'd need a lot of dedication and hard work, and much more than 5m a day. If you really wanted to learn a language, and had the time, there are much more effective ways to get there.

Duolingo isn't really built towards encouraging that kind of intense learning, because they know most people who download the app are looking for a bite-sized learning experience, and are willing to accept bite-sized results in return. For myself, I can say that after a couple of years of leaning Spanish on Duolingo, with no previous experience in the language, and an average effort of probably ~10m a day (many days less, some days more), I can read texts if they aren't too complex, follow a casual conversation, and communicate basic things. That's way more than I would've been able to do if I wasn't using the app.

Duolingo was helpful for me to expand my Spanish vocabulary, but it definitely did not teach me the language itself. Some of the most critical linguistic concepts are buried at the top of stages and not brought up in the gamified lessons themselves. I'm in a privileged position since my wife is a native Spanish speaker, so I quickly began to grasp how much Duolingo wasn't teaching me and how much speaking Spanish with my wife (and watching Spanish-language shows without subtitles) _was_ teaching me.

The biggest problem with Duo are the extremely limited exercises and educational materials. Gamification is great.

But you're not going to learn declension and cases from repeating the same few stilted examples that don't even exhibit enough variety to pick up the underlying rules, especially as an adult.

Duolingo is trying to do implicit language learning but the language input is far too narrow.

I used Duolingo to start learning a language with a different alphabet, and it taught me the alphabet, the sounds, and some basic vocabulary. But it couldn't teach me verb conjugation, noun declension, plurals, ownership, etc. etc. etc. That I needed a teacher for.

With the teacher, I then used Anki cards to help with remembering more vocab and with keeping things fresh everyday in between lessons. Duolingo could be that, if they had enough examples, perhaps. I would prefer Duolingo type exercises over my Anki cards, as well as the streak and friendship network effects, but there's simply not enough content.