Which do the people of the Org prefer?

Imperial :

16 ounces to a pound, 14 pounds to a stone
12 inches to a foot, three feet to a yard, 1760 yards to a mile.
pints (that's all I know for fluids -- and need to know)

Advantages : Good for the brain, requires mental thought to add things up, makes people better at maths

Metric :
1000 grams to a kilogram
1000 millilitres to a litre
1000 millimetres to a metre, 1000 metres to a kilometre.

Advantages : Easy to use

In USA, they use good ol' Imperial units.

Here in the UK, we use an odd mix of both. Shopkeepers are forced by law to sell products in Metric, but many display both Imperial and Metric units (except on pre-packed thingies). Distances are measured in miles on roads, but OS and road maps are in kilometres. Schools teach Metric, but some pupils know Imperial, and I have made an effort to learn it, sort of. The Metricisaction process began in 1971 with the introduction of the decimal currency...

In Europe, they use Metric.