The research fieldwork dedicated to trend analysis and foresight/forecast scenarios building, represents an unusual raid in an area where economic and social sciences have invested many efforts. Nevertheless, the semiotic dimension of this subject is not sufficiently thorough; many issues are at stake:We are going to investigate this area of analysis, for its relevance in post-Greimassian studies, for its interface with social sciences, as well as for its relevance for the legitimacy of semiotics in contemporary discussions of innovation and evolution.