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Best Of: The Science And Stories Of Time Travel

Jan 2, 2026
Join Jana Levin, a physics and astronomy professor, as she delves into the physics of time travel. Regina Barber, a former astrophysicist and science reporter, discusses the allure of time travel in media. Literary critic Jonathan Russell-Clark shares insights on narrative techniques in time travel stories, highlighting classics like 'Back to the Future' and 'Donnie Darko.' They tackle deep questions about free will, scientific possibilities, and the cultural significance of time travel narratives, all while debating where they would go if given the chance.
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INSIGHT

Tropes Can Enable Logical Holes

  • Jonathan Russell-Clark critiques Back to the Future for internal inconsistencies that emerge once viewers scrutinize its time-travel logic.
  • He notes recurring tropes like erasure of futures and paradoxes that the films ignore for comedy.
INSIGHT

Physics Allows Math But Not Reality

  • Jana Levin explains physics demands consistency and allows certain time-travel solutions mathematically, but they require unrealistic conditions.
  • She raises Hawking's chronology protection idea: nature may forbid macroscopic time travel despite math allowing it.
ANECDOTE

Encino Man As A Comic Misfire

  • Regina Barber names Encino Man as a bad example, mocking its frozen-caveman premise and Pauly Shore's incomprehensible speech.
  • She classifies it as forward time travel but calls its treatment ridiculous despite comedic intent.
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