Economic cybernetics

PXS promises no price. Its design notes describe it with terms from cybernetics; these pages explain those terms and say where each one meets the code and where it is only a metaphor.

• Viable System ModelBeer's model of a viable system, and the design's mapping set against the chain
• Variety and RegulationAshby's law, the disturbances PXS faces, and the responses the chain has
• Resilience and CascadesResilience, basins and self-organised criticality, tested against the chain's numbers