Biology – Quantitative Biology – Populations and Evolution
Scientific paper
2007-04-28
Biology
Quantitative Biology
Populations and Evolution
7 pages, 10 figures; http://cse.ucdavis.edu/~cmg/compmech/pubs/pefps.htm
Scientific paper
A general and basic model of primordial evolution--a soup of reacting finitary and discrete processes--is employed to identify and analyze fundamental mechanisms that generate and maintain complex structures in prebiotic systems. The processes--$\epsilon$-machines as defined in computational mechanics--and their interaction networks both provide well defined notions of structure. This enables us to quantitatively demonstrate hierarchical self-organization in the soup in terms of complexity. We found that replicating processes evolve the strategy of successively building higher levels of organization by autocatalysis. Moreover, this is facilitated by local components that have low structural complexity, but high generality. In effect, the finitary process soup spontaneously evolves a selection pressure that favors such components. In light of the finitary process soup's generality, these results suggest a fundamental law of hierarchical systems: global complexity requires local simplicity.
Crutchfield James P.
Görnerup Olof
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