The premise of post humans who can move from body to body, make copies of themselves and erase memories as needed seems like it might be flighty fun until Robin joins an experiment to live like a 20th century woman for an indeterminate amount of time cut off from the rest of the universe. The past of the inhabitants and the past of the human race turn out to be darker and uglier than expected - and the anthropological "experiment" also is not what it seems. I'm never really sure that I like Robin/Reeve all that much - but then neither is s/he.
