Abstract
The theory of organic evolution is incomplete until it can explain life's meaningmaking capacity and its role in the evolutionary processes, i.e. until semiosis is included. The extended synthesis theory of evolution has made a decisive step towards such an integrative theory, yet the explicit inclusion of semiotics of life is still to come. Here, we describe the steps made towards the semiotics-based theory of evolution, as the next stage after evo-devo and eco-evo-devo approaches. This includes demonstration of independent roles that natural selection, plastic adjustment, and interpretative choice have in adaptive evolution, and the distinction between adaptive and neutral modifications in genetic, plastic and interpretative mechanisms. Real meaning-making takes place only due to organism's interpretative processes. It should be complemented with a description of the ways by which knowledge (defined as products of semiotic learning), or rather the constraints of semiosis, can be inherited. This will complete the inclusion of semiosis into the extended mechanism of evolution.
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