User blog comment:Zathronas/Speculative author: Where are the Grimm?/@comment-5217560-20140915000437/@comment-24891101-20140916025831

Re: evolution: survival of the fittest is a generally applicable principle, yes, but only if the Grimm have some form of heredity. If new Grimm are identical to their predecessors, there'd be no change in the population's traits. Sure, the ones which are cannier, shaped by experience (if they can even be said to have such), or simply lucky will survive longer, but will ultimately be put to the sword.

And of course there are numerous specialists in the Grimm, in their habits, in their physiology (inasmuch as it applies to them), and in their eradication. This seems to be Port's entire class, which is of course based on his field experience, and the various papers in the various journals he's read, to keep current.

And I, too, like grey. If you've given thought to the motif elements, then you shall easily see my reasoning, for not for nothing do I suggest this. But the Creatures of Grimm are a zoomorphic representation of the hostility of the world to early Man, and his continued stuggle with it even after he conquers it. That cannot be described as evil, for to be evil requires malevolence, which cannot be ascribed to forces of nature. Mankind's early existence was precarious; we could have been easily wiped out before we properly achieved sapience. Even after, we were limited to small regions of the Great Rift Valley, and the world was a hard place. We only survived by hand and leg, tooth and claw. By bloody evolution, in a world of it. Tools and Fire were turning points, we could move outward with more confidence. But still, misadventure could befall. A beast stronger than we could attack and kill us, or a flood could wash us away. Even now, most of the world is tamed, but we are still at the mercy of the elements, and of beasts, though those we can fight and kill. So it is on Remnant, but that in addition to the beasts, there are the Creatures of Grimm, forces inimical to human progress. On Remnant, Man remains Man, Aura is Tools, Dust is Fire, and the Grimm are all the things which challenge Man in Nature.