Power of transformation, 16, 170
Predator, 241
Prediction, 132
Pre-fabrication, 268
Pressure, 45
Prey, 241
Prices, 34
Prisoner, 123, 124
Probability, 122
— as variable, 40
— , constant, 162
Problem-solving, 272
Product, 21
Programming, 252
Properties, breeding, 70
Protocol, 88
— , constraint in, 132
Protoplasm, 68
Provider, 201
Psychology, topological, 113
Puzzle, 272
RADIO DESIGNING, 253
Rana, 252
Random, 63, 259
— numbers, 234
— searching, 236, 258
Rayleigh, Lord, 64
Receptor, 220
Red corpuscles, 222
Reducibility, 60
— and selection, 261
Redundancy, 130, 182
References, 273
Reflex, 247
Regenerative circuit, 82, 137
Region, stable, 76, 229
Regulation, 193
— , limit of, 211
— , automatic, 251
— , amplifying, 265
Reinforcement, 133
Re-labelling, 97
Relay, 84, 93
Repetition, 89, 121, 247
Replicates, 136
Representation, canonical, 29
Representative point, 22
Requisite Variety, law of, 206, 245
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293
AN INTRODUCTION TO CYBERNETICS
INDEX
Reservoir, 238
Residues, 35
Resistances, 256
Respiratory centre, 81
Retina, 188
Reverberation, 137
Riguet, J., 158, 273
Rods, 160
Rubber, 112
SAMPLING, REPEATED, 172
School, 139
Science, 107, 121, 131
Scout, 155
Searching, 236, 258
Secrecy system, 141, 243, 273
See-saw, 82
Selection, 235, 236
Natural, 196
— , quantity of, 255
By machine, 259
Self-locking, 69, 234
Self-observation, 55
Self~reproduction, 111, 196
Semaphore, 125
Sensory channel, 220
Sequence, 155, 172
Series, exponential, 173
Set, 122
— and machine, 135
Shannon, C. E., vi, 93, 123, 161,
207, 243, 245, 260, 273
Shell, 198
Shivering, 238
Shuffling, 259
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Signal, 183, 221
Silver chloride, 68
Simple proportions, 131
Simplification, 103
Singing, 60
Single-valued, 14
— system, 39
Siphon, 238
Size of system, 61
— of inverter, 151
Skid, 203
Skull, 201
Smoke, 183
Sommerhoff, G., 211, 273
Sophistication, 92
Speech, 127
Speedometer, 146
Square of transformation, 17
Stability, 23, 73, 113
— under displacement, 77
— and survival, 197
— in Markovian machine, 228
Stable region, 76, 229
Stages of regulation, 263
— of amplification, 265
Stamp, 256
Standard, 246
Star cluster, 113
State, 25
Stationary, 30
— of equilibrium, 74, 229
— , inaccessible, 92
— , initial, as noise, 217
— , absorbing, 229
Stationary, 30
Statistical mechanics, 62
Statistics, 245
— , determinacy in, 91
Steady state, 30, 169
Steering, 203, 211, 215
Steermanship, 1
Step-function, 242
Stepping switch, 84
Stickleback, 26
Stochastic, 162
Stock breeder, 62
Strategy, 205, 240
Sub-system, 48
Sugar, 111
Supernova, 248
Supplementation, 65, 162
— of selection, 258
Survival, 77, 197
Switch, as input, 43, 253
System, 40
— , complex, 4
— , economic, 37
— , absolute, 41
— , definition of, 106, 227
— , very large: see Very
TABETIC, 220
Tachometer, 146
Tap, 234
Tea-taster, 135
Telegraph, 161, 211
Telephone, 161
Temperature, 135, 198, 237, 238
Testudo, 198
Thermal agitation, 78, 186
Thermodynamics, 136
Thermostat, 135, 198, 200
Thing, 131
Thirst, 224
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Threat, 221
Threshold, 66
Till, 15
Tinbergen, N., 26, 273
Tinder Box, 119
Topology, 85, 113
Tortoise, 198
Trace, 115
Traffic lights, 127
Train, 80
Trajectory, 25, 94
— of Markovian machine, 229
Transducer, 44, 143
Transform, 10
— , multiple, 161
Transformation, 10
— , single-valued, 14
— , one-one, 14
— , many-one, 15
— , identical, 15
— , geometric, 20
— , embodiment, 29
— , random, 65, 126, 135
— , inverse, 142
Transient, 48
Transition, 10
— , observing, 146
— , probability, 163
Transmission, 140
— , incessant, 161
Trial and error, 230
Triunique, 45
Tustin, A., 37, 237, 273
Twenty Questions, 126
Tyrant, 213
Tyre, 122
ULTIMATE EFFECT, 57
Ultrastability, 83, 233, 242
Uniselector, 84
Unsolvable equations, 37
Unstable, 78
VARIABLE, 31, 100
— in system, 40
— , missing, 114
— , essential, 197
Variety, 119, 125, 126
— , requisite, 206
— in vectors, 249
Vector, 31
— equality, 31
— constraint, 128
— , sequence as, 172
— , variety in, 249
Velocity, 74
Very large system, 61, 85, 109
—— — , regulating the, 244
Veto, 83
— , regulation by, 233, 260
Vitamins, 40
Vocabulary, 4
Vocal cords, 180
Volume, 45
WAGES, 34
Warder, 123
Water-amplifier, 266
Water-bath, 135, 198, 249
Way of behaving, 43
Weather, 31
Weaver, W., 273
Weighing coins, 156
Whole, 112
— and equilibrium, 82
Wholeness, degree of, 68
Wiener, N., 1, 123, 177, 273
Work amplifier, 240
ZERO VARIETY, 126, 137
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— entropy, message of, 211
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