Please tell me what is the logic of, for the man or woman measuring curtains, a metre being the length of the path travelled by light in a vacuum during a time interval of 1 ⁄ 299,792.458 of a second? Logical would have been 1/100,000,000 or 1/250,000,000 of a second, but no, they cut the time to fit an existing arbitrary measurement.
The metre was created by the French on the logical grounds that the English had the yard so they must be different. Logical? The DIN system (Deutsches Institut für Normung) varies its number bases to suit applications, just as Imperial measurements do - For instance the standard hole centre distance on circuit boards is 1.2mm, counting in 12s like inches. Metric, we are told, is logical because it counts in 10s, we have 10 fingers - we also have 2 hands, so 12 is as logical, or 20s as we have 10 toes, 12s are the most economical way to pack and stack things, they use the volume and area most efficiently, 10s are wasteful of materials - But hold on, nature does not count in 10s, it tends towards the logarithmic; it counts in 2s (cell division), fractals, in Fibonacci numbers, sizes of successive rings of petals in flowers increase in size according to the Golden Proportion, as do leaf sizes and spacing up a branch, see here: (
The Golden Proportion, Beauty, and Dental Aesthetics ); no there is nothing specially logical in the metric system. What you are really saying is, that you find it easier to count on your fingers. I have always held the view, the right tool for the right job, the metric system is as arbitrary as any other, its only advantage is that it counts in fingers...
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