Why is it that when I buy diesel for my car, it is priced per litre (just like the rest of Europe), but fuel economy figures are still quoted in miles per gallon, rather than litres / 100 km? Oh, and the road signs and speed limits are all in miles (per hour) too. How much does it cost me to drive the 60 miles to Manchester? An unnecessary stretch on my mental arithmetic!
Can’t we make the decision to properly metricate…or go back to poles, perches and chains. One way or the other, please! I suppose we could introduce a hybrid miles/ litre unit, just to confuse everyone even further.
Another measurement peculiarity…why do we measure electrical energy in kilowatt-hours? Surely this is Joules / second x 3600 seconds – a tautological unit if ever there was one.
Let’s raise a toast to simplicity.