User blog comment:Thrycius/Zheiro and The Moonlight Sculptor: Chapter 8/@comment-26328778-20150703070514/@comment-25002135-20150704020055

If it makes the most sense to you, then I think that's a good enough reason, lol

I came to this interpretation myself to explain how we could also get duplicates of the same unit, and since it made sense I decided to keep it.

Well, he did do it for the sake of making it more interesting, after all. xD