It would be interesting to know whether that was the case in Beforan society. I know there were a number of variables that changed, and I imagine that their culture wouldn't quite accept the cooler-blooded castes feeding other kids to their caretakers.

[Not from what little he'd picked up about it over time. He sees the frown. He knows 'other things' has to be a very specific kind of thing]

Some reasons don't serve as justifications. Others do. How exactly you determine which is which is fairly subjective.