Summary: A system that attempts to correct multiple arcs will go to an equilibrium with a certain
fraction of its arcs correct. If momentarily better than that fraction, it will drift
back to it. 5410, 5415 Retroactive inhibition prevented operatively The Multistable System : A system that adapts by correcting multiple arcs moves to an equilibrial "percentage
adapted" - for the more there are adapted, the greater is the chance that correction
of one unadapted will upset the adapted, 5360.
Summary: Discriminative feedback's optimal spread depends on the spread of constraints in the
environment. Discrimination optimal spread
Summary: Feedback in a dispersive system should be first wide-spread and then progressingly
narrower. 5413 Discrimination should contract with time The Multistable System : Destructive feedback may at first, in the history of the multistable system, be scattered
widely but should steadily be scattered in narrower range. 5371.
Summary: Keeping things apart by giving them room to spread in is too wasteful. r things would require about r2 spaces. Dispersion amount of overlap The Multistable System : Keeping reactions apart by giving them room to spread is costly in material and space.
Summary: Probability of district balls getting into same cells. 5830
Arc to shift or not to shift The Multistable System : If a change of step-mechanism (due to corrective feedback) makes an arc change place,
more space is required. If the change makes an arc change nature but not place, more
time is required. 5388.
Summary: Time of adaptation can be cut down if more space is available. The distinct reactions
should be sent to distinct places, any one reaction should not change its place during
its training. 5410, 5415 Habituation and plasticity Plasticity in system Reflex, conditioned and plasticity
Summary: "Gaining structure" as "experience to a set of trajectories." 5552
Summary: Demonstrate the state of a system by giving a stimulus to a dominated system and see
its trajectory. 5552 Demonstration of state by trajectory State observation by trajectory Trajectory as representing state
Summary: If all parts have a constant probability that a given state, for various conditions,
is equilibrial*, the whole's probability that its (whole) state is equilibrial depends on the coupling.
5461 * And one arbitrary, coupling is used.
Summary: If all the parts have probability π of being in equilibrium, the whole's probability may be as high as π. (For this to happen, the coupling must be highly selected, for each part must, as
it were, both give and take equilibrium without loss) 6019
Summary: If parts have most of their states equilibrial, and are many, the whole may [for a suitably selected coupling] have remarkably few equilibrial states; maybe none at all if π ≤ 1-(1/n). 5670, 5484, 5489. Summary 5524
Summary: If each variable goes equiprobably to its next value, and the couplings are equiprobable,
then the transformations of the whole make each state of the whole go equiprobably
to all states. The equiprobability does not follow if either variables' transformations
or couplings are not equiprobable. [deleted]
Summary: How the building of any whole from parts can be given complete generality: let each
part's input range over all other part's states; and let the cells of the table be
filled arbitrarily and independently. 5482, 5507, 5662
Summary: That a whole should have many states of equilibrium, given that designs of parts are
not to be matched to parts, it is necessary and sufficient that each part have many
states of equilirium. Summary 5524, 5489
Summary: Making a whole of parts each with a high probability of equilibrium is sufficient
to ensure short average length of trajectory (but not necessary). Example 5408
Summary: The world that is is just those properties that are not relative to the observer. Experimenter and the "real" world Reality meaning of
Summary: If the parts have probability of equilibrium πi, and if the parts have all combinations of canonical representation, and if all cells
in the same representation are filled independently, then the probability of a state
of the whole being equilibrial is Πiπi. If joined so that all information is brought to each part, the probabilities are
Summary: If the parts have probability of πi of being in equilibrium, and if the parts vary fully in their canonical representation
but the coupling are restricted, then the probabilities of two or more states being
in equilibrium (in the whole) are no longer independent. Summary 5524
Summary: "Probability of equilibrium" summarised. [deleted]
Summary: The whole built from random parts, by random coupling, when each part has probability
πi that its state is equilibrial, does not go (if not in equilibrium) equiprobably to
all states but favours those "near" itself. Summary 5524 Metric Hockett's metric
Summary: No general principle can be sufficient guide when selection must be done; some actual
channel is also necessary. 5585 Arc selection of Essential variables discrimination by Feedback methods for discrimination
Summary: In all cases so far, all arcs are assumed to have some sign that they are, or have
recently been, active, and the discriminative feedback hits only those with the sign.
5557, 5584, 5601, 5609, 5628 Activity as information for feedback Discrimination methods known
Summary: When the set of disturbances is a product set of minor disturbances, each of which
has its appropriate reaction unconditionally, accumulation is adaptation is readily
obtained. Often, the set of disturbances must be defined explicitly.
Summary: Conservation (or accumulation) of adaptations as deference against imperfect isolation,
when the "leakage" occurs in slow discrete steps. 5620, 5746 Disturbance occasional repetitive Isolation imperfect The Multistable System : The multistable system is the natural specialisation to the disturbance that comes
rarely but repetitively. 5618.
Summary: The machine that jumps directly to the answer, by spotting a constraint, extrapolates.
It can do this only after having had previous experience with other problems in the
same class, and by having a regulator that selects the better extrapolation functions.