At first I thought that the 'Acre-Foot' sounded like a joke unit, but obviously it is the amount of water that one hundred and twelve horses need to drink if they are each to plough eight hundred furlongs of furrow in a fortnight!! Honestly, you Americans just crack me up with your wacky units. So much more fun than being stuck with boring old litres!
Oh sure, privilege the number ten just because humans have ten fingers.
I thought you were supposed to be more progressive than us backwater colonies?