Inhuma Inigma
Some mild BOTLS spoilers and more serious BOTSS spoilers below
I kind of had a problem with this as well in that the answer seems to lie outside the BOTLS.
When I read BOTLS I assumed that when the Whorl reached Blue/Green some initial probes were dispatched to gather
information on the system. Some inquisitive Inhuma managed to stow away on the probes and were returned to the
Whorl.
Now, BOTSS provides a nice Deux Ex Machina mechanism for us - the Neighbours beamed them on board. This is a bit unfair to the reader though, the answer doesn't lie in BOTLS at all.
BOTSS introduces some new issues though, in order to be sentient as Quetzal is, Quetzal's mother would have had
to feed on a human. So where are these primal Inhuma? Are these the creatures out by the lake biting innocents?
My impression from BOTSS (but I have yet to read the last book, damn long distance orders!) was that the Neighbours
encouraged humans/Inhuma to live together as they knew that they could potentially find a harmony that the
Neighbours/Inhuma could not. The Inhuma secret amounts to: If humans did not prey on each other, the inhuma could
not prey on humans. If this is the motivation of the Neighbours then perhaps they introduced Inhuma to the Whorl
early on in order to kick-start this process. How did Quetzal even end up head of the Church?
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