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I figured that that Fringe episode was probably about the "multiverse", multiple temporal dimensions created by branching alternative possibilities. [E.g., Everything, Everywhere, All at Once (2022)]
After I tooted out that comment I realized that the point of your OP was probably more about stupid, inaccurate science facts in movies generally, than it was about any specific fact.
I'm about to drop another scifi #FTW about a film that is loaded with those silly factual inaccuracies.
I appreciate when a film actually makes an effort to get the science facts right.
