A dozen actually is ten in Roshar, iirc - they don’t have the word so as not to kick readers out of the experience (though it seemed to go the other way for you )
King of Herdaz
In the Stormlight books, the number ten is thematically and culturally very important. In The Way of Kings Prime, the word "tenset" is commonly used to refer to ten of something. So, when Rosharans in the published Stormlight books talk about "a dozen" of something, do they mean twelve? Or do they mean ten?
It's a great question. I've been using "tens" more often in Stormlight, because I've found that people will go with it. One of the problems I felt with Way of Kings Prime was that the worldbuilding, the learning curve was too steep. So when I wrote Way of Kings the new version, I scaled back a little on that. We mentioned weeks, but we don't talk about about the fact that on Roshar, a week is five days, right? We talk about hours, but we don't go into the length of time a day is. It gets all wibbly-wobbly, shall we say.
And my explanation of this is: these are all in translation. The translator (who is me) who is interpreting it, most of the time, when they say "tens," I will write "a dozen," or something like that. But not always.
Now, I am edging toward more "tens," because in-world they would use "tens." Peter is okay with this. Karen's like, "Eh, it makes continuity a little wonky." But I feel like, having gone as long as we have, people are okay dealing with more of that, so I'm leaning that direction. But understand, I am the translator presenting this to you. Pretend that, when Wit says something that's a pun in their language, I am finding a pun in English that is similar and writing it out, because he's not actually saying what the book is having him say.
But this is all just something you have to put in to imagine to keep that sense of immersion for you. And whichever one works to help you. But, yeah, they would be using "tens." They'd say "tens of" this, instead of "dozens," more often.
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