The relational structure of RNA, DNA, and protein bears an interesting similarity to the determination problem in category theory. In this paper, we present this deep-structure similarity and use it as a springboard for discussing some abstract properties of coding in various systems. These abstract properties, in turn, may shed light on the evolution of the DNA world from a semiotic perspective. According to the perspective adopted in this paper, living systems are not information processing systems but “meaning-making” systems. Therefore, (...) what flows in the genetic system is not “information” but “value.” We define meaning, meaning-making, and value and then use these terms to explain the abstract dynamics of coding, which can illuminate many forms of sign-mediated activities in biosystems. (shrink)

Based on our prior work (Neuman and Nave, in press [a]) we proceed from the notion that the mind has the capacity to generate and use concepts through themediation of signs. This mediation constrains the vast potential for confusion, given the incalculable number of similarities between objects in the world and therefore has important adaptive value. Despite the ubiquity of sign-mediated concept formation (SMCF), a rigorous formalization of this phenomenon is rare. Following the work of Neuman and Nave (in press (...) [a]), here we present a formal description of sign-mediated concept formation and discuss the relevance of this theory to certain outstanding issues in biology, psychology and Artificial Intelligence (AI). (shrink)