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Refreshed Skill Didn't Refresh?

I've just refreshed the "Business" skill on the Dutch course - it was only one bar down - but it hasn't returned it to gold. I didn't make a lot of mistakes, either, and when I finished, it confirmed I'd refreshed "Business". So why no improvement in the strength?

Is this a bug, or am I just really lucky it usually only takes one refresh to restore full strength? Does it mean I was really bad at "Business", that it needs more than one go to fully restore it?

March 15, 2015



Learn how strengthening works in the discussions started by Greg Hullender : Best Way to Make Your Tree Turn Gold and Stay Gold and Does Duolingo Keep Two Sets of Books?.


Its not a bug, just that the strength of a skill is the average skill of all the words introduced in that skill and there could be sixty or seventy words. Refreshing the skill may only refresh a few of those words so you sometimes have to repeat the process several times, although once is often sufficient.


Thank you - it just seemed odd that I've never seen it before, and I am nearing the end of my tree! So far, one refresh has always done it, even when it's a big skill with seven or eight lessons.

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