Board Thread:Speculation House/@comment-24278127-20131211040136/@comment-12227301-20131216001850

Something on a more technical note. "Semblances are unique" can translate two ways: either "There's not a single identical semblance throughout history and the world" or "semblances are very varied and personalised, so similar ones are unlikely".

I would tend to go with the second one, simply because "semblances are as varied as their people" seems simpler and most sensible than "Oh, a semblance that does A would really suit you, let me check... Oh, wait, sorry, it's taken". In the same vein it's said everyone has an identical somewhere, due to sheer amounts of people, I'd say a duplicate semblance is unlikely but "allowed".