A Fascinating Breakdown of Time Travel in Science Fiction

(Spoilers) Henry Reich from Minute Physics analyzes and compares time travel in science fiction books, films, and shows, including Harry Potter, Back to the Future, Groundhog Day, and more.

“For ages I’ve been thinking about doing a video analyzing time travel in fiction and doing a comparison of different fictional time travels – some do use wormholes, some relativistic/faster than light travel with time dilation, some closed timelike curves, some have essentially “magic” or no consistent rules that make any sense, or TARDIS’s, or whatever. This video is an explanation of how time travel functions in different popular movies, books, & shows – not how it works “under the hood”, but how it causally affects the perspective of characters’ timelines (who has free will? can you change things by going back to the past or forwards into the future?).”