The US legacy imperial system is inefficient and shouldn't be used

So let's begin by presenting some arguments about the US legacy system.Its "organicity" is its undoing, efficiency-wiseOne of the arguments commonly presented for supporting the use of imperial units is that they are "organic", i.e. they are borne out of everyday measures that we can "easily" relate to. A feet is about the length of a foot, a yard about the the length of a short stride, one inch is about the length from a thumb's tip to the knuckle, etc. That's just for measuring length though. A system of measure that only concerns itself with length measurements is deeply myopic. A system of measure needs to deal with volume, surface, mass, forces, electric measures such as current and potential, temperature. Well, what is the "organic" way to measure volume ? Another set of approximate measures, from cups (a small glass), to pints (a big glass) to gallons (kinda small bucket). What about surface ? Another set of measure, acres, square rods, square feet, square yard. Even dealing with just these three instances, length/surface/volume, we can see that there is little common grounds, with units that were "organically" designed separately, and ratios between these units that are all over the place. This is a huge factor of inefficiency.Some examples:- You measure the sides of your room in feet n' inches. You need to buy carpet, which is sold by the square yard, you need A LOT of conversions before arriving to the correct value that you need before you buy. Any error and you'll buy too much or not enough. - You have an aquarium, you measure the sides, and you need to know the number of gallons it can contain. You can't without using A LOT of conversions again. Any error and you might buy a too small or too big volume for your fishes, which might die because of it, or the pump will be over- or under-dimensioned.OBVIOUSLY these examples are not things you do everyday, they represent just the most easily evidenced examples of that kind of efficiencies. Anything that involves going from length to surface or volume or back or any combination thereof is done only with a large amount of arithmetics, while there is no need for this arithmetics if the units had been thought out and not let to run havoc "organically".The insistance on frational unitsThe US legacy imperial system is based on fractions. Each unit is fraction of the one above it, e.g. an inch is 1/12 of a foot, which is 1/3 of a yard, which is 1/1760 of a mile or 1/220 of a furlong or 2/11 of a rod. Therefore it seems logical to continue and use those fractions when dealing with measurements that are below a "major unit". e.g. an inch is quite large compared to a lot of engineering/technical needs, where therefore the 1/16, 1/64 or 1/32 inch and its multiples are used widely. But this does not go without a price. Using fractions is probably just fine when all you are doing is multiplying or dividing. But when you need to compare two numbers or add them or substract them, then you face inefficiences. You need to calculate common denominators, do the operation, maybe find another denominator for reducing the fraction, etc etc. Not hard, probably no one faces difficulty there. But it's an uneeded inefficiency, there's no obligation to use fractions. We invented a perfectly good system of counting to do that kind of thing, using a decimal basis, and decimal points.... With a decimal number system, you face the same amount of difficulty when multiplying,dividing,aring,substracting, there's no "hard point", no operation easier than another or harder than another. By insisting on fractions, the US legacy imperial system wastes time (which is money) when doing the "hard point" operations, while not gaining any time in the supposed "easy" operations. Let's face it, anyone who thinks it's easy to take 1/16, divide by 2 and get 1/32 will not face harder difficulty when taking 0.06, divide by 2 and get 0.03 .It's not adapted to the modern worldWhen dealing with technology, the world we live in, we need to measure other things, things that are neither lengths nor surfaces or volume. We need to measure a current, an amount of electrons passing a surface in a given time. How would we do that in US legacy imperial units ? We don't. The unit for current, voltage, measurement are amperes and volt, which are SI units. These units were defined more than a century ago by the IEC, which included the British Institution of Electrical Engineers and the American Institute of Electrical Engineers. These two representants, users of the imperial system, could have lobbied to define at the time "imperial" measures of electricity, but they didn't. Maybe they recognised that introducing the kind of inefficiencies seen in length/surface/volume measures into technology would not help. One area where imperial units stuck is in energy, where the BTU is widely use in some areas, you can buy the fuel for heating in BTUs. But if you want to know the equivalent electrical power you need for that kind of energy you need to do conversions between volts*amperes and BTU. How much BTU/h can a given wind turbine give knowing its electrical output ? Conversions. How high would you need to move water up a dam to get X BTU of electrical energy back ? Conversions. What's the resistance of a one foot long cable with a given wire gauge cross section and resistivity? Conversions. The US legacy system went ahead and accepted SI units for electricity, but this means all the other non electric units that should be linked to the electric units (energy, mainly) in a simple way, are not, in the current US legacy system. There are conversions all over the place.Its disparate nature is unecessarily confusingWhat's a pound ? Should be an easy answer, right ? Wrong. There are two, the troy pouand the avoirdupois pound. They are not equal. If you buy an avoirdupois ounce of gold and expect to sell it at x$/ounce, you'll feel bad when seeing gold is sold in troy ounces, there's a few gram difference which can mean a few hundred dollars difference. You might be scammed because of it, and for no reason other than people who insist on using the US legcay imperial system, as it is designed. What's an ounce anyway ? You FIRST have to precise what you're measuring, if you're measuring a volume, then it's fluid ounces, which is 1/20 of a pint. If it's a mass, then it's not that. Does a fluid ounce of liquid weighs one ounce ? Almost but not quite, and the 4% difference might be enough for some bad design decisions. How much weighs a gallon ? You might know the answer by heart because you're familiar with it. But shouldn't measurements be NOT known by hearts, isn't it the point of the system to be an abstraction to do stuff, and not something that you have to learn by heart ?I'll let these points stand, good luck to my opponent.