Two Introductions to Cybernetics
Learning paths

Two ways through

There are many concepts here. Gordon Pask observed that learners tend toward one of two styles — serialists, who build understanding step by step along a line, and holists, who need the whole shape before the parts. Each style wants a different route through the same mesh.

The serialist path

One concept at a time, each resting on the ones before it. Follow the numbers; nothing appears until what it depends on has been met. This is the safest single-track route and matches the order of the knowledge graph's Serialist order toggle.

  1. Cybernetics · FoundationsThe whole that names the field — control and communication unified.
  2. Control · FoundationsOne of the two subjects; read first in the body, then in machines.
  3. Communication · FoundationsThe second subject; the flow of signals between parts.
  4. Feedback · FoundationsThe mechanism that joins control and communication.
  5. Stability / Ultra-stability · FoundationsWhat feedback produces: return to equilibrium, and ultra-stability.
  6. Homeostasis · FoundationsStability realised and actively maintained in a living system.
  7. Adaptation / Learning · FoundationsStability sought under change becomes learning.
  8. Self-adapting systems · FoundationsThe class of systems that adapt — the master concept.
  9. Nervous system / brain · Biological substrateThe paradigm natural example of regulation.
  10. Neuron (nerve cell) · Biological substrateIts unit; the building-brick of every model.
  11. Reflex / conditioned reflex · Biological substrateThe neuron in action; the simplest learned response.
  12. Inhibition · Biological substrateThe holding-back of a reflex — Young's key to flexibility.
  13. Intelligence · Biological substrateWhere the biological chain culminates: mind as inhibition / adaptation.
  14. Memory / forgetting · Biological substrateStorage and, crucially, forgetting in the nervous system.
  15. Logic / Boolean algebra · Formal / computationalThe formal language for describing automata and nets.
  16. Automata theory · Formal / computationalAbstract machines specified by logic.
  17. Turing machine · Formal / computationalThe automaton that formalises computation.
  18. Digital computer · Formal / computationalIts buildable, universal realisation.
  19. Information theory · Formal / computationalThe measure of the communication those machines carry.
  20. Neural nets / neuron assemblies · Modelling and machinesNeurons plus logic — the bridge from biology to computation.
  21. Modelling · Modelling and machinesHow all of this is put together: hardware/software, growth/pre-wired.
  22. Simulation | Synthesis · Modelling and machinesThe two aims of modelling — copy, or achieve by any means.
  23. Pattern recognition · Modelling and machinesThe basic problem a sensing model must solve.
  24. Game-playing / heuristics · Modelling and machinesHeuristic problem-solving — an early road to intelligence.
  25. Artificial intelligence · ApplicationsThe synthesising ambition: build intelligence.
  26. Management cybernetics · ApplicationsFeedback and computing applied to organisations.
  27. Educational cybernetics · ApplicationsFeedback applied to teaching (P.I. / C.A.I.).
  28. Biocybernetics · ApplicationsTurning the models back onto biology.

The holist path

Don't start at the beginning of a line — start with the whole. Read the five clusters below as gestalts, each in a single sweep, so the overall architecture is in view; then drop into any concept page and the detail will have somewhere to attach. Move between clusters along the bridges (for example neuron → neural nets links biology to computation, and self-adapting systems → modelling links foundations to machines).

Foundations

Grasp the spine first: cybernetics names a field about control and communication, joined by feedback, producing stability, homeostasis and finally adaptation. Hold these seven together before any detail.

Biological substrate

See the biological cluster whole: a nervous system built of neurons, firing as reflexes, restrained by inhibition, culminating in intelligence and shadowed by memory and forgetting.

Formal / computational

See the formal cluster whole: logic specifies automata, the Turing machine formalises them, the digital computer builds them, and information theory measures what they communicate.

Modelling and machines

See the modelling cluster whole: the choice of model (hardware/software, growth/pre-wired, simulation/synthesis) and its products — neural nets, pattern recognisers, game-players.

Applications

See the applications whole: once feedback, computing and communication are mastered, they project outward into artificial intelligence, biology, management and education.

Open the graph and explore freely →