There’s a pedestrian crosswalk from the south to north side of Turkle Street (a fictional name) at its intersection with Main Street. Repainting it is on an annual schedule maintained by Matt, the office administrator of the Department of Public Works (DPW) within a more general system for work assignment, resources, budgeting, and planning. The repainting work is assigned to Fred when it comes up, coordinated with the crew painting center lines and parking space boundaries in the spring.
Alfretta sees that the paint is becoming less and less visible over the course of the summer. She relies on the crosswalk being visible as a signal to drivers that they must stop when a pedestrian enters the crosswalk. (In California, as I recall, stepping off the curb anywhere suffices, but here in Massachusetts the legal sanction applies only to the crosswalk.) In mid October, she sees that the lines are barely visible. This is a disturbance to her control of a perception of pedestrian safety, specifically her own, her neighbors’, and that of some children going to and from a playground. She makes some telephone calls and is redirected to Janet, the head of the DPW.
Alfretta’s call is a disturbance to a number of Janet’s controlled perceptions, including those concerned with the scheduling and assignment of work. She goes to the intersection and verifies the problem. She tells Fred to fit it in to his current work assignment. She then makes some changes to her budget request for the coming year, adding a description of this problem of her documentation of a more general problem calling for a new, more durable kind of paint. … And so on.
This vignette indicates many perceptual variables that are controlled by a number of individual people. The perception “pedestrian crosswalk between the south and north sides of Turkle Street at its intersection with Main Street” is clearly a controlled perception. In this brief segment of time its deterioration was a disturbance to several people who acted, each by his or her own means, to resist that disturbance. However, we must understand that this perception has been successfully controlled prior to Alfretta’s observation and complaint and that it will be controlled subsequent to Fred’s repair. No one person is the sole controller of this perception. It is collectively controlled.
An example of stabilization is the shape of the vortex in water running down the drain. Another is attractor basins. Bill emphasized the contrast between control and this kind of stabilization.
That said, Kent has preferred ‘stabilize’ for what happens to the corresponding aspects of the environment when a perception ‘of’ them is controlled. We affirm that aspects of the environment are stabilized because more than one party reports ‘stability’ in their perception of them, while perceiving them by their ideosyncratic input functions and by different means (e.g. someone perhaps measuring them). These aspects of the environment are public, and the several individuals’ perceptions are in a public, subject to designation, naming, description, prescription, discussion, etc.
In the vignette above, aspects of the environment which we readers and multiple parties in the story call “pedestrian crosswalk between the south and north sides of Turkle Street at its intersection with Main Street” may be said to be stabilized; each party controls his or her perception of those aspects of the environment so named, and by concurrently controlling it (with diverse gain, with ideosyncratic output functions distinct from one another’s, and employing disparate environmental feedback functions) they and unidentified others all participate in collective control.
The common aspects of the environment are the ‘one place’ that so troubled you; each has his or her own controlled perception of those aspects of the environment that constitute this ‘one place’. It synchronizes their several controlled perceptions, so that they perceive themselves and one another severally to be engaging as autonomous control systems in numerous activities — designating that ‘one place’, naming it, describing describing it, prescribing its reference state, discussing disturbances to its state and environmental feedback functions affecting it, assigning particular controlled perceptions and their reference values, scheduling, planning, budgeting, and so on — control activities which all in some way involve those aspects of the environment at this ‘one place’ which each perceives in his or her own way.
One place that Kent made the distinction between control of perception and stabilization in the environment is here, for example:
You refer to a third kind of stabilization.
It seems to me more transparent and natural to call this agreement. Agreement as to what is to be controlled and at what reference value can be reached in various ways. I won’t attempt a survey or catalog here. One way that has been explored a bit emerges after some environmental stability has emerged from low-gain conflict among a plurality of control systems. At first, the state of the given variable is a more or less minor inconvenience to all parties, but there it sits in an intermediate but tolerable state. Then it turns out that this part of the environment, so stabilized, is discovered by some planning process or by reorganization and comes to be used as a convenient link in the environmental feedback path for one or more parties to control some other perception. Thereafter, disturbance from this intermediate state is a disturbance to control of that other perception. An atomic link within one environmental feedback path commonly comes to serve as a link in other environmental feedback paths intersecting the first and serving in control of other perceptions. The number of occasions for resisting disturbance to this environmental convenience, and the number of parties finding occasion so to resist disturbances to it, quickly multiply. Kent and Martin have given more specific examples.
Here’s Bill’s take on this fifteen years ago:
PCT is a system of ideas that changes reference signals and ways of perceiving in such a way that both individual control and one’s participation in collective control improves. That suggests to me that PCT as a science (a collectively controlled system of perceptions), will prevail because those who comprehend it control better, and people can be taught how to control better by educational and therapeutic means that refer to it. It is up to us to internalize it in practice. This was Bill’s stated belief, too, though not in just those words. Comprehension of collective control is essential.