CONTENTS 



Preface 



Chapter 

 1 : What is New . 



The peculiarities of cybernetics 

 The uses of cybernetics . 



Page 



V 



1 

 1 



4 



PART ONE: MECHANISM 



2: Change .... 

 Transformation 

 Repeated change 



3 : The Determinate Machine 

 Vectors .... 



4: The Machine with Input . 

 Coupling systems . 

 Feedback 



Independence within a whole 

 The very large system 



5: Stability 



Disturbance . 



Equilibrium in part and whole . 



6: The Black Box. 



Isomorphic machines 

 Homomorphic machines . 

 The very large Box . 

 The incompletely observable Box 



9 



10 

 16 



24 

 30 



42 

 48 

 53 

 55 

 61 



73 



77 

 82 



86 



94 



102 



109 



113 



PART TWO: VARIETY 



Quantity of Variety . 

 Constraint 



Importance of constraint 

 Variety in machines . 



121 

 127 

 130 

 134 



vm 



