there is no correct side of the road, it's a custom that varies. same with stop signs. universability is advantageous so contagioushttps://twitter.com/michaeltrillium/status/857038810848215040 …
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Replying to @michaelmalice
signage and traffic are the same in contiguous territories; I guess "contagion" might work, it did for the Americas
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Replying to @michaeltrillium
think about how coding languages spread, no one is forcing programmers to pick java or whatever
6:16 PM - 25 Apr 2017
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