System Analysis

[From Fred Nickols (980407.1635 EDT)]

Bill Powers (980406.0748 MST)

There is a difference between PCT and many other explanatory schemes that
tends to be left out of discussions. PCT is an example of _system
analysis_, whereas few other psychological theories belong in that category.

<snip explication of "system analysis">

All models in the hard sciences abide by these rules of system analysis.
Essentially no models in the psychological sciences do, other than PCT.

That is a powerful statement. I do not wish to challenge it; indeed, I hope
it is quite true. Assuming it is true, I could sell a whole lot of "stuff"
with that as a premiss. So, my question is this:

        How might I verify the assertion in the line above beginning
        with "All models..."?

Remember, I am asking this not to challenge but to confirm. I'm not quite
expert enough to stand up and declare it is true, so how might I confirm it?

P.S. Bill Powers and a fellow named Roger Kaufman are the only two
      people I've every known who took care to distinguish between
      systems analysis and system analysis.

Regards,

Fred Nickols
The Distance Consulting Company
nickols@worldnet.att.net
http://home.att.net/~nickols/distance.htm