Let's relax and sleep with more mysteries of relativity, like the speed of light, why time isn't time, and how a fake train robbery reveals that simultaneity doesn't exist. Except when it does.

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Read "The ABC of Relativity" here: https://www.gutenberg.org/ebooks/67104

Music: "Boring Books for Bedtime," by Lee Rosevere, licensed under CC-BY http://leerosevere.bandcamp.com

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