Ed Huntress wrote:

The point is that the standard units don't necessarily relate *in whole
numbers* to the things we actually measure. Trying to be neat and tidy,
metrics sometimes shoots itself in its own foot.

The "problem" is the acceleration on earth (depending on *where* you measure
it). It is 9.81m/s^2. Thus the factor of 0.1... to "convert" (it is *no*
conversion) mass to force.
F = m * a

Maybe you find a planet where a = 10 m/s^2. :-)


Nonsense. The Newton is defined in terms of kilograms, as well. It's just
that it's defined in terms of acceleration rather than as force itself.

You didn't understand the SI-system. It is based on **as** **few** **as**
**possible** units, the rest is derived/partially defined by them.
They a kg, s, K


You sound like one of those pro-metrics folks who make up all of this
supposed neatness of the metric system, Nick, and then wonder how everyone
else doesn't agree with you.

I don't wonder of anybody who doesn't agree but at the same time doesn't
understand the difference between mass and force.

I only have to look at the domain-dependant units of pound, pondal, pound
force and whatever to see what mess it is.

Read about the SI-system before you talk about it.

Nick
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