When we’re talking about whether or not a story’s “time…

““When we’re talking about whether or not a story’s “time travel logic” makes sense, it is important to remember that every story builds its own framework for its own logic. In that sense, time travel is more of a fantasy-based story element than a science-based one. Time travel does not exist in the real world, and any broadly accepted rules for how it can and can’t work were derived from a bunch of “that guys” talking about time travel fiction. There is no “makes sense” in the universal sense – that is to say, criticizing a time travel story because its rules do not line up with rules in the real world is akin to dismissing the Harry Potter books because the conductive properties of wood could never sustain the energy required for spell casting. Approaching a time travel story with a dogmatic measuring stick in hand also denies the unique pleasure that the genre affords tinkerers. A good story’s internal logic is flawless, and everything in between its first and last word makes sense on its own terms. In that way, it presents the tinkerer with the literary equivalent of an Escher drawing. Internally, step by step, the logic of Escher’s staircase makes (or makes you believe it makes) nefariously perfect sense, and its dissonance with what we know to be possible is not something you have to “just accept and get over to enjoy it,” but is the very source of what’s enjoyable about it.””

— Ann VanderMeer