Evolution with Material Symbol Systems

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        Luis Rocha's paper "
      
      
        <u>Evolution with Material Symbol Systems <rocha.html></u>
      
      
        " presents a theoretical and computational study of the inter-dependencies of symbol and 
        matter. He first uses Pattee's semantic closure principle to identify the requirements for 
        open-ended evolution, framing this principle in biosemiotic terms and offering a 
        definition of the concept of representation for both biological and cognitive systems. The 
        second part of the paper describes artificial life simulations that contrast two types of 
        evolution observed by different populations of agents: those that reproduce via genetic 
        variation and those that reproduce via self-inspection of self-organized components. From 
        this study, Rocha concludes that symbols are necessary to attain open-ended evolution, but 
        only if the phenotypes of agents are the result of a material, self-organization process.
      
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Evolution with Material Symbol Systems

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