People often think the speed of light is weird and arbitrary because we use weird and arbitrary human- and Earth-based units to measure it. So we get values like 299,792,458 meters per second and 5.88 trillion miles per year, which are messy and don’t seem “right” for such a fundamental constant in the universe. But meters, miles, seconds and years are just human creations. You could measure the speed of light in banana lengths per fortnight and it would be no more or less legitimate.
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