Although it has an interesting concept, ultimately this book finished weakly for me. Given that's it's a thriller that meant that it undermined all of the build-up from the other chapters. 
 I do like the writing style; some minor twists had much more impact due to the nature of their reveal, and VanderMeer is genuinely talented at building a creepy, believable atmosphere. However, I feel there was a lack of depth with the other characters, too little answers for how many questions he posed, and too much left to 'reader discretion' to really make the book feel satisfying once the final page had been turned. 
 I felt like I was reading a novel half-finished, and given how fascinated I became with our narrator 'The Biologist', that was disappointing. I am still appreciative of the original idea of the novel and of the writing style itself, so I would say to anyone that if they want something a little different, this may be a good book to fill that need. Temporarily.