Same question pops up thrice in a single lesson?

I've been practicing the "Expression" unit of Esperanto tree, and I noticed that in this unit and several previous units, a "Select the missing word" question can pop up for 2 or 3 times in a row in a single lesson, looking exactly the same every time it shows up.

This seems weird, since even if a practice sentence is important enough to be repeated in a lesson for several times, shouldn't the questions about it be spaced through the lesson?

February 25, 2018


I haven't practised any Esperanto recently, but this problem has been happening to me a lot in the Czech course, and also somewhat in Welsh. I don't know what determines how many questions any given lesson has, but the number seems to have increased recently for both of these courses, and presumably repetition occurs when there aren't enough sentences associated with the (now longer) lesson (and practice selects lesson questions by some algorithm, some of which are now the same).

I was told that the course contributors can't do anything about it, so you might want to move this thread to 'troubleshooting', where staff are more likely to see it.

February 25, 2018

Good point. I have moved the thread to Troubleshooting; hopefully they'll do something about it :)

February 26, 2018

Happens in almost all of the courses now and again - it is a Duolingo algorithm issue not something the individual language course creators can do anything about.

February 25, 2018

I have had this problem repeatedly in German recently. I actually stopped doing DuoLingo entirely a while back and this bug was one of the many factors.

Basically, around 6 months ago and before, I would only very rarely encounter this bug. Because it was rare, it didn't bother me much.

Something switched more recently, and I noticed it most in the German course but I have encountered this problem more frequently in all the courses since the change. In German I sometimes got the same sentence over and over again, and then I'd do a different practice and it would be the same few exercises, repeated heavily...extremely boring to practice, and unlike before, I couldn't just finish it and be done with it...because it would happen over and over again.

It made it not worth practicing for me. I've entirely stopped doing DuoLingo...and I cancelled my paid subscription.

I feel frustrated. DuoLingo used to be such an amazing site and I got so much out of it, but recently I think it has gone downhill.

February 26, 2018

I think Duo does this to help students like myself who are primarily interested in verbal communication.

February 26, 2018

This doesn't make sense to me.

I'm also primarily interested in verbal communication. But it's not helping me, it's hurting me, because it's boring me and causing me to lose interest in using the site.

It would be fine in the early stages of learning, in fact, I probably would appreciate this in the languages I know less well like Russian or Chinese. The Chinese course can sometimes be too hard to the point that I get frustrated and give up on a lesson, especially with its extremely long sentences and the lack of working audio on hover-over (another pet peeve bug of mine that was introduced around the same time they broke the German course for me).

But in German, I am level 21 with over 18,000XP. I've been to Germany three times. I want to practice more advanced stuff. They have access to the data to tell that I'm advanced. And it was working before, and is now broken.

February 26, 2018

German for me too. Some lessons, it is a single bit of vocab that comes up five times in a lesson. Makes it quick and easy to get through it I suppose, but not the most productive practice.

February 27, 2018

Same here. Happened in every Esperanto lesson I did this week

February 25, 2018

Same here dude

February 26, 2018

My PT-DE (reverse) tree behaves very wrong; I can not tell for sure about PT-DE (forward).

The same question popups up as the next question with ZERO spacing, even I answered it correctly before.

Normally you would have to expect a space of at least 3+, if the previous answer to a question was wrong (e.g this is the standard on Memrise).

This happend in PT-DE not only twice, but at least three times in a row!! VERY annoying!

Sometimes the translation directions are switched, but not always.

Any update / rollout from the past months has totally corrupted the queuing code of putting questions in a learning session together :(

February 26, 2018

Yesterday I had the Japanese course give me the exact same question four times in a row (without me making any errors).

February 26, 2018
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