home *** CD-ROM | disk | FTP | other *** search
- Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
- Path: sparky!uunet!paladin.american.edu!auvm!VAXF.COLORADO.EDU!POWERS_W
- X-Envelope-to: CSG-L@vmd.cso.uiuc.edu
- X-VMS-To: @CSG
- MIME-version: 1.0
- Content-transfer-encoding: 7BIT
- Message-ID: <01GOPLE780EA0000B2@VAXF.COLORADO.EDU>
- Newsgroups: bit.listserv.csg-l
- Date: Sat, 12 Sep 1992 20:52:06 -0600
- Sender: "Control Systems Group Network (CSGnet)" <CSG-L@UIUCVMD.BITNET>
- From: "William T. Powers" <POWERS_W%FLC@VAXF.COLORADO.EDU>
- Subject: Autonomy
- Lines: 160
-
- [From Bill Powers (920912.1400)]
-
- Dennis Delprato (920912) --
-
- RE: Autonomy.
-
- You're coming very close to the position I think I have. As you say,
- the development is delicate. On the one side there is the pit of
- solipsism, with the world denied and made imaginary or subject to
- whim. Down the other side lurk the positivists, who must eventually
- advocate controlling people for their own good according to objective
- criteria. At the apex where these two slopes -- one slippery and the
- other studded with sharp rocks -- converge, there is, I think, a
- narrow ridge which, followed to its end, will show us a self-
- consistent view of the environment, of other people, and of ourselves.
-
- Greg Williams is perfectly correct in wanting us to develop a theory
- of interaction. To cast the problem in terms of manipulation, however,
- is to beg a question, because we don't know, without analyzing the
- possible mechanisms, what can actually be manipulated by another and
- what can't.
-
- The underlying question is what we mean by autonomy: in what respects
- are organisms autonomous and in what respects not? Organisms clearly
- depend on their environments (including other organisms) for
- sustenance of various kinds. Furthermore they have inherited needs
- about which they have no choice. Understanding autonomy is especially
- difficult in a hierarchical system, where combating a disturbance at
- one level entails altering goals at lower levels. Goal-directed
- behavior is not, per se, autonomous -- in a hierarchy.
-
- There are certain processes in the human organism that are carried out
- simply because of the way the organism is put together, inside.
- Control itself is an example, as is reorganization. The environment
- contains no means of carrying out these processes for an organism,
- either to help it or hinder it. A human being must acquire perceptual
- functions that produce consistent perceptions, perceptions that vary
- in sensible ways and relate to each other without contradiction. The
- environment can't do that kind of making-sense; only a brain can. Once
- a perceptual signal exists, it is the brain that must carry out
- comparisons with reference signals, to generate an error signal. The
- environment does not inform the human organism of how it, the
- environment, should be, nor does it tell the organism what constitutes
- a discrepancy with the organism's goals. And it is the inner
- mechanisms of the organism that must find out how to convert error
- signals into those choices, amounts, and directions of lower-order
- actions that will make the errors smaller. The actual process of
- finding those means, as opposed to what means will be found, is
- strictly a product of internal mechanisms for change.
-
- On the other hand, the organism can produce outputs, but it can't
- determine what the consequences of them will be. All the brain can do
- is drive the effectors. It is the environment that then serves up the
- consequences. The environment can generate consequences on its own; it
- can vary enough so that a given action seldom creates the same
- consequences twice, and it contains independent forces that affect
- perceptions. This is my best evidence for existence of a Boss Reality
- that exists and has properties independent of my experiences.
-
- Because the environment has properties and contains independent
- sources of disturbance, the organism must learn by itself which output
- variations will control its perceptions and which will not. Once the
- organism has begun representing the external world in a particular
- perceptual way, and once it commits to a goal, to reproducing a
- particular state of that perception, it has no choice but to produce
- an output that is sufficient to create that perception. The forms of
- its perceptual functions determine how the environment will be
- apprehended, but given those forms, it is the environment, not the
- organism, that determines what actions will in fact be sufficient to
- control the perceptual result. The organism must contain means of
- discovering the effective actions, the means of control, but it has no
- say as to what those actions will turn out to be.
-
- When an organic control system resists a disturbance, it does so
- relative to a goal-state of the affected perception. But that goal-
- state itself is adjusted as it is because of other disturances that
- have effects on higher-level perceptions, making them deviate from
- higher-level goal-states. There is no end until we reach the top
- level. Only there do we find the possibility of purely endogenous
- goal-generation. Below the top level, the way goals are set is
- determined by the perceptual structure that intervenes at lower
- levels, and by the properties of the environment, which dictate how
- resetting a lower-level goal will affect a higher-level perception.
-
- Each level of control, therefore, comes into being through the action
- of internal mechanisms for change and development, but the final
- result, the control organizations that come into existence, must be
- designed to work through the properties of the world that actually
- exists, however we may perceive it.
-
- Finally there are the intrinsic variables, their inherited reference
- levels, and the process of reorganization driven by intrinsic error.
- These are defined for the organism by its heritage. Thou shalt stay
- warm, but not too warm. Thou shalt breathe, and eat, and drink or find
- ways of acting that have equivalent effects. Thou shalt reproduce, and
- find the experience pleasant. Thou shalt avoid injury, and find injury
- painful. And so on through a list that is undoubtedly longer than any
- we can now write down.
-
- The environment can affect intrinsic variables, but it can't say what
- will constitute an intrinsic variable, or a reference level for one.
- The process of reorganization, being capable of altering anything in
- the hierarchy of control, both perceptions and actions, overrides all
- other considerations. The environment may determine what must be done
- to affect a given perception in a given way, but it is the
- reorganizing system that decides what will constitute a perception,
- and whether any particular state of it is to be sought or avoided.
-
- With respect, at least, to the current environment, these built-in
- systems define the true autonomy of an individual. The individual will
- learn to perceive the environment, and to control its perceptions
- relative to particular goals, in ways that use the properties of the
- environment and satisfy the requirements of the inherited control
- system that I call the reorganizing system. In an advanced organism,
- if the properties of the environment aren't sufficient to find a way
- of eliminating intrinsic error, the properties of the environment will
- be changed. The rain will not be allowed to fall, the wind will not be
- allowed to blow and freeze, the sun will not be allowed to beat down
- -- on this organism.
-
- So autonomy, in any one lifetime, is awarded to the organism, in
- particular to its reorganizing system. But that is only in one
- lifetime.
-
- One organism is a member of a species. There are processes of blind
- variation and selective retention that span the links between
- generations. The selective retention depends at least in part on
- criteria endogenous to the species; even the blind variation may be in
- part an act of the species rather than just a random effect of
- something else. The species contains mechanisms for change. And it
- must also contain reference signals that are passed down from
- generation to generation, which define the reason both for starting
- and for ending change.
-
- I won't follow that trail any further; the point is only to show that
- the same principles of autonomy can be extended into the past, with
- the environment providing the stage and acting mindlessly to disturb,
- but being incapable of carrying out the processes of change, which
- continue to reside in the species. This trail leads all the way back
- to the first molecule that stabilized the conditions on which the
- accuracy of its replication depended, and thus gave birth to life.
-
- Here and now, we live in a world whose properties are largely unknown
- to us and which determine for us the effects of our actions. We,
- however, choose our own goal structures, as our means of preserving
- ourselves in the state that our natures tell us is right. Between this
- ultimate personal autonomy and the impersonal events in the nonliving
- universe, there comes to be a hierarchy of control systems that
- reflects both our overriding inner needs and the conditions the
- environment places on meeting those needs.
-
- This is the best I can do for now by way of laying out the meaning of
- autonomy and the relation of an organism to the world outside it. This
- still leaves open the question of interactions among organisms;
- organisms with similar organizations, and organisms assymetrically
- related to each other. Whatever we decide to say about manipulation, I
- think it will turn out to describe the situation presented here: one
- organism learning how to affect its perceptions in the way it wants,
- by choosing actions from among those that the environment says are the
- only feasible ones.
-