What do our protags have in mind to extract themselves? Let’s find out:
As I have mentioned before, one of the most important features of the Valley, at least as far as humans are concerned, is the high level of biodiversity that in turn enables the development of a great deal of medicinal technology. Anything that might dramatically alter a particular ecosystem could have major deleterious effects on access to medicinals, which means the humans have to be very careful regarding how their own actions impact the environment.
So when Razi says they can’t kill the yonge because it’s a keystone predator, what xe’s getting at is that it’s a species with a significant impact on the ecology despite a relatively small population size.
Check back next week to see if our protagonists manage to come up with a better plan than “explain complex ecosystem interactions to the yonge.”