I don't know why the title is T"he Long Utopia"; this series is not about utopia; it is about parallel worlds.
I enjoyed the book's flashbacks and further background details.
The conclusion was some what of a let down as the antagonist species had no real dimension..
I would have liked to know more about the Next although I was left with a positive feeling that the Next reached an accomodation to protect and nurture their predecessors.
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The Long Utopia