I didn’t actually like the experience of reading this book; I don’t generally enjoy psychological slow-burn explorations, especially if the narrators are not immediately likable. That said, the writing flowed patiently and easily, the musings of a perfectly understandable insecure narrator, but gradually interspersed with growing wrongness underneath. You learn that there are no more birds or bugs, since the earth is dying; the air hurts to breathe without filters; toxins fill the soil. This book is very much like Ishiguro’s Never Let Me Go, in that sacrifice via genetic science is presented as key to preserving the human race, but of course the real human journey is found in the emotional connections.