“Why not prevent me from getting that knowledge in the first place? Couldn’t they go back to when I was fourteen and steal the journal from the garage before I saw it?” “Point of detection. The TCB reacts to the point of detection to avoid grandfathering the situation. Um,” Kin said, realizing he was using company lingo among the uninitiated, “what I mean is that it creates a thing called—” “The grandfather paradox,” Miranda said. She knew. Of course she knew. This was the girl who would rather go to a science fiction convention than a school dance. “What does your grandfather have to do with
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