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Swami's avatar

Fantastic comment! Thanks

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Mattias Martens's avatar

To put forward a hypothesis based on your point: I think when complex systems survive, it’s because they enable constructive interactions, laterally, between their sub-components.

“Constructive” becomes the new term to define. What I mean is a domain whose agents innovate in response to problems, with the ability for agents to cooperatively share their solutions, and without any one agent becoming so dominant as to prevent all the others from meaningfully evolving.

The ecosystem is constructive to the extent that no one species can dominate. This illustrates the danger of invasive species: when a new species enters a domain and has explosive success there, it pushes the rest toward extinction and limits diversity. This creates a bottleneck period (maybe millions of years long) during which the fate of the ecosystem depends on a small handful of species.

The ecosystem, of course, is not intentionally self-regulating. At least one can say it's an open question whether the collective effects of the ecosystem act to stabilize environmental conditions (Gaia hypothesis) or create destabilizing feedback loops leading to mass extinctions (Medea hypothesis). And it’s even possible that by periodically killing off much of life, but not all of it, the ecosystem is actually magnifying constructive competition.

Some complex systems do actively self-regulate towards competition, however. This is basically the ideal picture of capitalism: a government exists to create a stable economic playing field within which any agent has the potential to turn a profit with a valuable good or idea. Without government there is no capitalism, only disaggregated fiefdoms; without capitalism, a large government is rigid and brittle. (And of course monopoly and state capture both can lead to a version of capitalism that lacks lateral constructive exchanges.)

Another complex system that self-regulates toward lateral constructive exchanges is the brain, at least according to Marvin Minsky’s agent theory of mind. In this system, the brain consists of a hierarchy of agents that all try to make sense of an input stream and produce outputs. If the input has lots of error relative to an agent's model, an agent will fail to interpret it—become "confused"—and send only a weak signal. The agent that sends the strongest signal thus has the chance to relay its message up the chain and ultimately produce action. The top-level activity of the brain is therefore not to limit or regulate its composing agents, but to mediate between them to produce an output for the whole system.

Centralized systems fail when they impose too much control on their subsystems, such that the system can only fail all at once. Centralized systems succeed when their subsystems can act independently and non-hierarchically (within the restrictions and guarantees imposed by the larger system); this allows subsystems to succeed or fail independently of each other, and means that small failures can be self-healing as surviving agents take on the roles of failed agents.

For any complex system, there is an ideal but unknowable balance of freedoms to provide to subsystems, and restrictions to enforce to maintain cohesion and inner stability. I suspect that for any successful "world government", the ideal balance would be very much tilted toward freedom: the central body manages response to planet-wide threats and enforces guarantees on human rights, but devolves most everything else.

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