[From Rick Marken (980826.1325)]
Mary Powers (980826) --
The proposition that A can control B's behavior raises a number
of questions for me:
1) Doesn't the idea of A controlling B's behavior imply a cause-
effect, S-R relationship?
I don't think so. A is a control system; the variable that A is
controlling happens to be an aspect of B's behavior (either a
variable B is controlling or an action B uses to control some
variable). But the model of A's control of B's behavior is still a
closed loop control model; A has to vary his actions appropriately
to produce the intended perception of B's behavior. A's behavior
(controlling B's behavior) is not cause-effect; it's control.
2) Isn't A's "controlling" actually a _disturbance_ to B?
Yes. A's control actions are a disturbance to a variable B
is controlling. If B happen's to want that variable in _exactly_
the same state A wants then A's control actions will have no
disturbing _effect_ on the variable B is controlling; but,
still, A's control actions are disturbances to the variable
B is controlling.
B may go along with A because doing so maintains important
reference levels and the actions A wants do not create much
error.
Yes. But this doesn't change the fact (easily estabilshed by
test) that A is controlling a variable aspect of B's behavior.
This is a more subtle and complex interaction than simply
saying "A is controlling B".
Yes, that's true. But saying "A is controlling B" doesn't describe
the subtlties of the _interaction_ between A and B in terms of
how A and B fel about it. The phrase just describes A's behavior;
and it describes A's behavior perfectly accurately if A is, indeed,
controlling B's behavior.
3) In the case Dick mentioned, A's disturbance ("control") is
just plain overwhelming.
Yes. In this case A's controlling is successful.
If this is the effect A wanted, was A producing it by "controlling"
B, or what?
Of course A was controlling B. Think of it as though A were a
driver controlling the position of a car rather than the position
of a child. Suppose A wants the car to move to the left and the
car moves to the left "on it's own" (without A having to move
the wheel); A is still controlling the position of the car, a
fact that would become readily apparent as soon as the car stopped
doing what A wanted; then A would start turning the wheel as
necessary to get the car to behave as desired. The same is true
when A is controlling a child (B) instead of a car; if B does what
A wants even when A does nothing to get B to do it, A is still
controlling B, a fact that would become readily apparent as soon
as B stopped doing what A wanted; then A would start manipulating
B, as necessary, to get the desired behavior.
Is getting the effect one wants what is meant by controlling, even
if the process is really more complicated, as in (3)?
Yes, I think so. And I don't think the process you descibe in
(3) (where B gives up) is really more complicated than plain
vanilla controlling. From A's perspective it's still plain
vanilla controlling; when B gives up it's just like the disturbance
going to zero when you are trying to control the cursor in a
tracking task. It doesn't matter (from the controller's perspective)
_why_ control actions are no longer needed to keep the perception
of the cursor in the desired state; indeed, the controller may not
even notice that she now needs to do nothing to keep the cursor
under control; she just keeps controlling, for the nonce, by doing
"nothing" (zero change in the output variable).
The problem is how do you talk to and about control systems
whose goal is the control of other control systems?
Why not just talk about it the way we talk about control systems
whose goal is to control _any variable_? People are controllers; they
control whatever variables matter to them. Some of the variables
that matter the most to people are variable aspects of the behavior
of _other_ people (other control systems). It seems to me that
one of the great potential contributions of PCT is not the denial
that such control (control of the behavior of other control systems)
occurs but the understanding of how that control differs from control
of the behavior of _non_ control systems.
Are you really controlling another control system unless it's
completely limp and unresisting and you can move it around like
a puppet or a scarecrow?
You are controlling another control system as long as you want
it to behave in a particular way and will act (if necessary) to
resist disturbances to your perception of that control system's
behavior. If no action is necessary because the system is limp
and unresisting you are still controlling it. I think this will
have to be one of the first things we demonstrate in our Vensim
control models; control goes on even when the output of the
control system goes to and remains at zero.
What about all the folks in counseling, education, corrections,
parenting, management, etc. whose business is the control of other
people or the teaching of how to control other people? We're
using control in one sense, as what people do, period, and in
another, as what people do to other people, and it is utterly
confusing.
It doesn't strike me as confusing at all. I always use "control"
in one sense: to refer to "what people do". People control all
kinds of variables; they control the position of their hands,
the distance between their hands and objects, the speed of their
cars, etc etc. One of the variables people try to control is
the behavior of other people. Whether we control cars or people,
it's still _control_. But, since PCT helps us understand the
unique nature of people as control systems, it shows what the
unique problems will be when we try to control people instead
of non control systems.
PCT shows that when you try to control the behavior of another
control system you are actually putting youself into a _conflict_
with that system. If you are strong enough, you can win the
conflict and control the behavior of the other control system
(this kind of control is called coercion); if you are about the
same strength as the other control system, then neither of you
will win the conflict; you will not be able to control the other
control system. If you are weaker than the other control system.
then you will lose the conflict; your behavior will be controlled.
If the weaker person sees that resistance is futile and gives up,
then the person who is controlling the weaker person will be
called "non-coercive" by everyone except, apparently, your husband
and myself;-)
Love
Rick
···
--
Richard S. Marken Phone or Fax: 310 474-0313
Life Learning Associates e-mail: rmarken@earthlink.net
http://home.earthlink.net/~rmarken