Tion being conducted by groups, by the fast method. Thus, if the



Machine is reducible the fast method of selection can be used.

In fact, reducibility is extremely common in our terrestrial sys-

Tems. It is so common that we usually take it for granted, but he

Who would learn how to regulate the very large system must

Become fully aware of it.

To get some idea of how much the world we live in shows

Reducibility, compare its ordinary behaviour with what would

Happen if, suddenly, the reducibility were lost, i.e. if every varia-

Ble had an effect, immediate or delayed, on every other variable.

The turning over of a page of this book, instead of being just that

And nothing more, might cause the lights to change, the table to

Start moving, the clock to change its rate, and so on throughout the

Room. Were the world really to be irreducible, regulation would

Be so difficult as to be impossible, and no organised form of life

Could persist (S.7/17).

The subject must be left now, but what was said in Design … on

“Iterated systems”, and in the chapters that followed, expands the

Thesis. Meanwhile we can draw the conclusion that if a responsi-

ble entity Ω (S.13/10) is to design (i.e. select) a machine to act as

Regulator to a very large system, so that the regulator itself is

Somewhat large, the achieving of the necessary selection within a

Reasonably short time is likely to depend much on whether the

Regulator can be made in reducible form.

Whence the Regulator? Now at last we can answer the

Question that has been latent throughout Part III: how is the

Desired regulator to be brought into being? The question was

Raised in S.13/10, but since then we have explored a variety of top-

Ics, which had to be discussed before the threads could be pulled

Together. Let us now survey the position.

The process of arriving eventually at a particular machine with

Desired properties implies selection, and it also implies that the

262

Responsible entity Q (of S.13/10) has worked successfully to a

Goal With whatever variety the components were initially availa-

Ble, an with whatever variety the designs (i.e. input values) might

Have varied from the final appropriate form, the maker Q acted in

Relation to the goal so as to achieve it. He therefore acted as a reg-

Ulator. Thus the making of a machine of desired properties (in the

Sense of getting it rather than one with undesired properties) is an

Act of regulation.

Suppose now that this machine of desired properties is the reg-

Ulator discussed throughout Part III— how is it to be made The

Answer is inescapable: by another regulator.

Is this a reduction ad absurdum of our whole position? I thin

Not. For the obvious question “where does it all start?” is readily

Answered. As biologists, our fundamental fact (S.10/3) is that the

Earth has now existed for a long time, that selection has acted

Throughout this time, and that selection favours the appearance c

Regulators (S.10/5). These facts alone are sufficient to account for

the presence on the earth today of many good regulators. And n~

Further explanation is necessary if it should be found that some o

These regulators have as goal the bringing of some mechanism to

Standard form, even if the standard form is that of a regulator

(with goal, of course, distinct from that of the first). The scientist

Would merely be mildly curious as to why something that could

Be done directly, in one stage, is actually done indirectly, in two.

We can thus answer this section’s question by saying that a reg-

Ulator can be selected from some general set of mechanisms (man,

Non- regulatory) only by being either the survivor of some process

Of natural selection or by being made (another process of selection

By another regulator.

Is not this making of the desired regulator by two stages

Wasteful? That it should be arrived at in two stages suggests that

The problem of getting a regulator always has to be solved before

it can be tackled!

Again, what does this imply when the very large system to be

Regulated is the social and economic world and the responsible

entity Ω is some set, of sociologists perhaps, whose capacity, as a


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