The Speed of Light is NOT About Light

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(PBS Digital Studios theme) Does the speed of light actually have anything to do with light? (Space Time theme) So what is it about the speed of light that's so special? Why does the universe seem to conspire to, 1) keep photons from traveling at any speed but 300,000 kilometers per second in a vacuum, according to any observer, and, 2) keep anything from traveling faster than that speed?

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