I think that the article is sorely missing the point of the metric system. It's not about communication. For communication, the frathe of reference doesn't matt

I think that the article is sorely missing the point of the metric system. It's not about communication. For communication, the frathe of reference doesn't matter, as long as both parties agree on the same reference. In fact, I find imperial units to be somewhat more intuitive than metric units. Instead, it's all about unit conversion. One liter of water weighs one kilogram and is a one decimeter cubmore room degrees is where water freezes, and 100 degrees is where it boils. This makes water the universal conversion constant, which makes it easy to compare different units (eg weights and volumes). Also, it's trivial to convert meters to millimeters and kilometers. But this happens surprisingly seldom in practice compared to converting volumes to weights or lenghts.