it shouldn't actually cost that much if phased in correctly. Even working in a msall Uni here in the UK (which isn't the best in the world resources wise) equipment is rotated and updated on anything from a 3-10 year period. Any changes would be made at this time, for example we've moved over to a new software package, this is updated as pcs are changed in their normal cycle keeping costs to a minimum. This would work the same with road signs, the most important sign get updated every few years anyway and miles and km would be added gradually (works the same here with Wales - signs have names in Welsh and English). And although UK is considered 'metric' we still use miles, and if pubs start selling in anything other than pints and pounds I'm pretty sure they'd loose some major custom! And we still use lbs etc in the market, and many supermarkets still sell in pints and get around it legally by selling 1 pint and labeling it as .0000 litres as well or whatever it is. Metric is useful for some things obviously but the mundane day to day stuff has ways around it.
What I realy don't understand are the US 'cups' - I have many mugs, cups etc. the US cooking shows (yes i'm sad) give measurements in cups, and believe me it doesn't work! (i am too lazy to convert so my own fault but my mug is definatly not your cup)
also, aren't some states metric anyway? It may be my lack of knowledge of the US but I thought you were mixed anyway.....at least with regards to miles and kms. May just be me being ignorant, if so please excuse me.
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