Archive image from page 179 of Design for a brain; the. Design for a brain; the origin of adaptive behavior . designforbrainor00ashb Year: 1960 DESIGN FOR A BRAIN 12/12 anaesthetised, or frozen; what is necessary is that the segment should be unvarying. Physical separation, already noticed to give no certain inde- pendence, is sometimes effective because it sometimes creates an intervening region of constancy. 12/12. The example of Figure 12/10/1 showed one way in which the behaviour of a set of variables, by sometimes fluctuating and sometimes being constant, could affect the independencies
Archive image from page 179 of Design for a brain; the. Design for a brain; the origin of adaptive behavior . designforbrainor00ashb Year: 1960 DESIGN FOR A BRAIN 12/12 anaesthetised, or frozen; what is necessary is that the segment should be unvarying. Physical separation, already noticed to give no certain inde- pendence, is sometimes effective because it sometimes creates an intervening region of constancy. 12/12. The example of Figure 12/10/1 showed one way in which the behaviour of a set of variables, by sometimes fluctuating and sometimes being constant, could affect the independencies within a system. The range of ways is, however, much greater. To demonstrate the variety we need a rule by which we can make the appropriate modifications in the diagram of ultimate effects when one or more of the variables is held constant. The rule is:—Take the diagram of immediate effects. If a variable V is constant, remove all arrows whose heads are at V; then, treating this modified diagram as one of immediate effects, com- plete the diagram of ultimate effects, using the rule of S. 12/9. The resulting diagram will be that of the ultimate effects when
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