Excellent story

This isn't the first time this type of story has been written, certainly (see: James Tiptree Jr.'s "Houston, Houston, Do You Read?'" and Joanna Russ' "When It Changed" ), but it's an excellent example of the subgenre in which a culture that assumes it's superior is confronted by its assumptions. Which is only to be expected from N. K. Jemisin, whose writing never fails to impress.