A fairly breezy book. The main character(s) have a fun personality and I have enjoyed the idea of seeing iterations bring out different aspects of the original. The new species in this book is fun; I hope we get more of them in the final book.

The author introduces some challenging questions and gives them a very light touch. Is our finitude part of what gives us meaning as a person? If saving our species means eradicating another, should we do it? Is life just nasty, brutish, and short?