I’m no expert, but I’m pretty sure the ‘master ruler’ is actually a guy named Carl Friedrich Gauss, and his mates who hung out in a German beer hall, arguing over beer about what a meter should be. Apparently, they decided on the length of a bit of metal they found lying around, and then just kinda… ran with it. No big deal, just a bunch of dudes making arbitrary decisions about the fabric of space-time. Now we’re all stuck with it!
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