Die zerbrochene Kaffeetasse beweist, dass Zeitreisen UNMÖGLICH sind | Richard Feynman

Feynmans Geist

Feynmans Geist

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A broken coffee cup never puts itself back together. But why not? The answer to this question is the same answer to one of the biggest questions in physics: why time travel into the past is not only difficult, but fundamentally impossible. This video explains entropy, the arrow of time, spacetime, and causality—and shows why the universe itself doesn't allow for a return.

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