I think this may be the best of my 2019 reads. I found the plot, the characters, the setting/ situation all intriguing. Greg Bear is at his very best in this novel. The story is as well written as "Darwin's Radio"; thematically similar as well. Perhaps one of the most interesting curiosities involves the author's world-view. Suffice it to say he is one gloomy optimist. A truly enjoyable read.