User blog comment:Gourgeist/Shingeki no Kyojin Chapter 66 Review: Wish/@comment-26004142-20150215140605/@comment-7418318-20150223223814

But the bottle also throws up more questions (or possibly inconsistancies):

If the Armour-Braun ability is in that bottle, does that mean they captured Rainer and took the power from him or do multiple versions of this power exist?

If multiple versions exist, how did that come to be? Were multiple versions created at the beginning, or did the power spread from one parent to more than one child?

If the latter is the case, why isn't the same the case for the coordinte? Why does the child have to eat the parent (or uncle/aunt or whoever) for the power to pass on.

Is there still a way to create new serums or copy existing ones without having to kill the current holder of the power?

So many questions...