REPLY Meaning of Stock/Level (SD6953)

[SDMAIL Keith Linard]

Posted by  Keith Linard <linard.keith at gmail.com>

Re Jack Harich's post:
> Maybe it's more like nouns versus verbs. 
> Variables that are verbs (rates) have a unit per time period, like persons/year. 
> ...  Verbs cannot be a stock

Consider velocity:  (displacement/time)
Velocity can be either a flow variable or a stock variable, depending on
whether one's focus is on displacement or acceleration.  That is,
Velocity can be considered either as a noun or a verb, depending on context,
just as in the English language we distinguish between a word being used as
a verb or a gerund.


Keith Linard
150 Lacote Road
Greendale
VIC 3341
Posted by  Keith Linard <linard.keith at gmail.com>
posting date  Tue, 22 Apr 2008 08:34:27 +1000