Back to the Future (film): Difference between revisions

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* [[Technicolor Science]]: The lightning bolt.
* [[Techno Babble]]: Lampshaded. "English, Doc!"
* [[Telephone Exchange Names]]: Phone numbers revert to an old format in 1958, where a phone bookdirectory listing presented in a 555-5555 format in 1985 looks like [[555|KL5-5555]] in 1958.
* [[Temporal Paradox]]: Perhaps the most tropeworthy ontological example is how there are four DeLoreans present in Hill Valley on November 12th, 1955 - the one that Marty traveled back in time with in Part I, the one 2015 Biff traveled back in time with in Part II, the one Marty and Doc traveled back with also in Part II, and the one taking [[The Slow Path]] sealed up in the mine shaft shown in Part III.
** Averted in that each time the DeLorean makes a trip through time, a new timeline is created, one whose primary difference begins with the appearance of the car itself. This perfectly preserves the Law of Conservation of Matter. Calculating all the trips made in the entire series, there are about nine timelines, with Doc and Marty occupying the ninth one by the third film's end.