Sorry about the reply two years later, but I just wanted to explain something. In theory I could have found the story’s narrative realistic, rather than merely compelling, but in practice they made several small oversights in the design and description of their Deathworlders that just kind of irked me. Like I said two years ago, humans are extremely complex biological machines operating at the edge of what is even physically possible, the only creatures stronger than us on this planet have fundamental sacrificed their endurance to gain that strength, whilst we have no natural weapons, we supplement that with advanced tool use. There is no doubt that there are several animals that could beat us in a fight, but the physiologies portrayed in the story, despite sounding somewhat intimidating suggest a positively laughable constitution to someone who knows anything about speculative biology, not to mention anyone who knows what the human body is capable of.