[tips his head in a shrug; those are most excellent points and he has no reason to argue]

The trouble with 'em is that they don't seem to stay down. They're not alive, I can tell that much, so they can just keep rebuilding while we get tired and hungry and sore. It's fun to a point, but then you have to know when to step back.

[hence the reason he's looking for the way down to where he felt living things that could be killed. And eaten.]