>American Exceptionalist Ah yes, because all criticisms of SI's inherently flawed design must be from an American. Lol, lmao even. >I can just as easily use

>American Exceptionalist Ah yes, because all criticisms of SI's inherently flawed design must be from an American. Lol, lmao even. >I can just as easily use my handspan or the lengths of my fingers to estimate lengths in centimetres as you can in inches But you can't do that for meters, whereas you can for feet- and I only need to remember one body part for one inch (and one for one foot, naturally) whereas you have to remember several because the centimeter is too small, and the meter too big, to use in this way (you cannot even really generate 1 cm- so you have to do multiplication every time you want to do this). The SI base unit's design handicaps its usability here- having to use fractions or having to multiply by 2 or 3 afterwards to compute what would normally be counting by 1s is, obviously, not an improvement. See, the average Joe gains zero benefit from the knowledge that he is using a measurement that has something to do with how large the Earth is. Sure, navel-gazing academics like the symmetry, and math problems in school are a bit easier when you're just staring at an abstract number rather than having to sanity-check a measurement of an object you have sitting in front of you- but a system of measurement designed for human beings (and not states or vague modernist principles) should have picked the latter to work on, not the former. It is not a coincidence that every country in the world, pre-SI, set their measurement's "1" (or 1/10th, 1/12th, or 1/16th) at what we now consider to be 25-30mm: good design, intended for humans. The fact that number in SI is not a round one: bad design, intended for... something else. >is metric is far easier and more intuitive as soon as you want to do anything complicated with those measurements. Until you want to divide them into thirds, fourths, sixths, or eighths, then you have to remember the 3 numbers of the fraction anyway. Doing this makes sense for abstract things like money and (to an extent) volume, since I hope you're not measuring liquids with your hands, but "visualize how much water this is in relation to some length" is generally not a problem anyone who isn't writing things down already (and can thus deal with arbitrary conversions) has. And for those who do work in odd fractional measurements... they're already working in decimal anyway and have been ever since the caliper was invented, so what difference does it make for them?