[Mr.T]

"Roy W. Rising" wrote in message
...
Which is also backwards thinking. We only chose break points of
20-20kHz,
100Volts etc. because we had ALREADY chosen to use a decimal number
system!

Your other responses were interestingly confused.

Sorry that you think so.

This one is somewhat upside-down.
Logarithmic representations include natural logs that do not
use the base 10. While they more closely resemble our natural
perceptions,
their math is unfamiliar.

Exactly, log(e) is used where appropriate in the scientific world. It's use
would be of limited value if you are trying to reach the general population.

The break point of 20 Hz is conveniently close to 16 Hz, the lowest
fundamental in acoustical music. 20 KHz is in the neighborhood of the
highest frequency humans can conciously identify. These nearby decimal
locations remain convenient approximations.

Exactly. That's what I said, they were chosen as suitably appropriate
DECIMAL numbers for convenience. They did NOT precede the decimal system.

Many of the same primates continue to insist on a system of
weights and measures that conspicuously avoids decimal simplicity.
Velocities measured in furlongs per fortnight or miles per hour and
pressure measured in pounds per square inch deny the *assumption* "we had
ALREADY chosen to use a decimal number system!" ;-)

Yes humans are irrational. However sometimes there are good reasons for
things the way they are. I doubt we will ever have decimal time for example,
but who knows, if we ever colonise another planet things might change.
Angular measurements in degrees, radians etc. have their own benefits too.
Many such examples.

But there is a good reason why *most* countries have gone Metric anyway. And
*most* have decimal currency.

MrT.