How is this different from https://en.wikipedia.org/wiki/French_Republican_Calendar https://en.wikipedia.org/wiki/French_Republican_Calendar ? Note that the Re

How is this different from https://en.wikipedia.org/wiki/French_Republican_Calendar https://en.wikipedia.org/wiki/French_Republican_Calendar ? Note that the Republican Calendar hasn't seen mass adoption even though its use was mandated by law; discuss the ease of migrating eeeeeverything vs. institutional momentum ;) In other words, if people were purely rational, we'd all drive on the same side of the road and use the same units worldwide. Do we?