Importance of Horizontal Evolution for the Sociocultural Sciences

Universal selectionism is used to designate a shared theoretical framework and shared methodological toolkit (a universal language) to comprehend and model vertical biological and sociocultural evolution. In similar vein, symbiogenesis can be universalized to designate a shared theoretical framework and methodological toolkit to comprehend and model horizontal sociocultural evolutionary processes that occur through processes of cultural diffusion, cultural contact, or language mixing.