Beautiful. Usually I dislike narratives that jump perspectives and time frames, but Mandel does it in a way that feels meaningful rather than a gimmick or ploy to keep the reader's attention. Her parallelism and observations in both character dialogue and narrative feel like poetry.

This book is a meditation on isolation, endings, and human nature.

I feel like this book happened in the same universe as Lily Brooks-Dalton's "Good Morning, Midnight," where a man waiting to die in the arctic outlives the rest of humanity (save the returning crew of the first manned ship to Jupiter.)