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The good enough calculi of evolving control systems: evolution is not engineering
The American Journal of Physiology
|March 1, 1982
Summary
Evolved control systems, essential for survival, often incorporate feedback and homeostatic mechanisms. These systems develop through simple increments and indirect survival criteria, leading to robust yet imperfect control logic.
Area of Science:
- Systems Biology
- Evolutionary Computation
- Control Theory
Background:
- Evolved systems often retain functional elements from prior iterations.
- Survival value favors control mechanisms that adapt and maintain stability.
- Simple organizational changes are generally preferred in evolutionary processes.
Purpose of the Study:
- To explore the characteristics of control logic in evolved systems.
- To understand how survival pressures shape complex control mechanisms.
- To analyze the indirect relationship between survival and the evolution of control rules.
Main Methods:
- Analysis of control operators incorporating feedback, feedforward, and homeostatic principles.
- Examination of internal controllers with modifiable rules facilitating invention evolution.
- Study of systems developed through statistical acceptance and indirect survival referencing.
Main Results:
- Evolved control logic is often redundant, incomplete, and may contain detrimental aspects.
- Control systems can be composed of loosely linked or autonomous sub-logics.
- Effective solutions can emerge from incomplete information and imperfectly defined rules.
Conclusions:
- Control logic in evolved systems is shaped by indirect survival criteria and statistical acceptance.
- The resulting control mechanisms are functional but not necessarily optimal or fully understood through conventional analysis.
- Understanding these systems requires acknowledging their emergent and often imperfect nature.