As a metric user, this is an interesting point that I haven’t heard before, and I think the other responses don’t really engage with it. Yes, familiarity means this isn’t much of a daily problem – you just use divisions of the unit that are most appropriate. But the size of the base units for volume, mass and length don’t really match up well from a human day-to-day perspective.
Wouldn’t it be nicer if a litre, a gram and a cubic metre of water were equal, rather than 1 cubic metre, 1000 litres, 1,000,000 grams?
Side note that in Europe drinking products are often labelled in centilitres whereas Australians use millilitres. I wonder whether this indicates some difference in the way the two groups think about volume, or maybe it is just the fallout of some other constraint, like translations limiting the space available.
Still, the ergonomics seem to be on the side of Metric, taking into account the ease of conversion between units when all are base ten.
Wouldn’t it be nicer if a litre, a gram and a cubic metre of water were equal, rather than 1 cubic metre, 1000 litres, 1,000,000 grams?
Side note that in Europe drinking products are often labelled in centilitres whereas Australians use millilitres. I wonder whether this indicates some difference in the way the two groups think about volume, or maybe it is just the fallout of some other constraint, like translations limiting the space available.
Still, the ergonomics seem to be on the side of Metric, taking into account the ease of conversion between units when all are base ten.