Who, besides Pat Naughtin, has observed that using centimeters slows metrication or recommends that centi- not be used? More generally, who advocates using only powers of 1000? I should have time soon to write to the BIPM about preferring the dunam to the hectare, the reason for which is that neither the hectare nor the are is a power of 1000 times the square meter, whereas the dunam is.
Pierre
