PCT model

Saturday, 0700 am: AOL has been down for maintenance of mail
function since I prepared this. Swithching to MCImail.


[From Dag Forssell (940624 1800)] >[Paul George 940624 15:45]

As a first comment note that I haven't read any of Power's work.
What I know of PCT I have seen on the net in the last few weeks.

This is not a very good base for detailed technical discussions.
I apologize.

...Based upon Dag's diagrams you rely on observed inputs and
outputs and identify an input transducer(s), a control
function(s), and an output transducer(s), without defining details
or internal structure. This is usually called a black box model,
though you don't really seem to look at it that way.

Paul, please wait to draw too many conclusions until you have read
the literature. My simple diagram and introduction was intended to
be a summary only -- an illustration of the basic concept intended to
attract interest. Remember, I invited you to study PCT, and gave
references. I did not pretend to offer a complete dissertation.

You seem to be charging full speed ahead based not only on what
little I showed on BPR-L, but also on what your background tells

For instance, I do not understand from your comment where I showed
you that we rely on observed outputs (observed by whom?), and what
precisely you read as control function(s). There is a real
difference in perspective on control between control engineers, who
look at control systems from the outside, and PCT thinkers who look
at control from the inside of the living control system itself.
There have been drawn-out, detailed arguments on this here. That
is why I suggested you review the archives. But reviewing the
archives will not make too much sense without reading the basics
first. The bible is: Behavior: The Control of Perception (BCP).

Why don't you tell us some more of where you are coming from
(you must be a control engineer?), just which of my diagrams
you are referring to, and how you read it.

Be aware that CSG-L has not seen the dialog on BPR-L, except for
the initial post.

Did you get my phone message today? (805) 254-1195.

Best, Dag