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Title: Lacks of originality
Review: The use of Quantum Multiverses to travel back in time has been widely used in Sci-fi literature for decades. I cannot see the originality of this story, because it contains the usual time-travel paradoxes and similar topics. And as other readers have noted, it turns out to be just another adventures book once the time travel is made. The diagrams are classical in Chichton books and very explanatory, that's true. Year-lights away in quality and imagination from Andromeda Strain's, his best novel ever. For a very good novel on multiverses, better read 'What A Mad Universe', by Fredric Brown.
