> >Dear Joe,
> >
> >People are, and have always been comfortable with mountain heights - up to
> >29,012 feet, flight details that includes heights such as 35,000 feet, and
> >ocean depths such as 20,000 Leagues.
> >
> >To say that they are now uncomfortable with large numbers (because they are
> >associated with SI) is an obvious, ill-considered untruth, and should be
> >treated as such.
This is a human nature thing.
35000 feet Is a long distance, and so is 20000 leagues.
Those big numbers feel natural and logic. That's why they have been accepted.
200 mL is not a big volume and 200 mm is not a long distance. 200 g is not a
heavy weight either.
That is one of the reasons to make it 20 cL and 20 cm. It better falls in line
with the nature of human mind.
Why do you think people always use percents instead of promilles?
Following strict SI you should say that american industry is about 400 promille
metricated...
