Heinz Von Forester characterizes the objects “known” by an autopoietic system as eigen-solutions,
that is, as discrete, separable, stable and composable states of the interaction of the system with its
environment. Previous articles have presented the FBST, Full Bayesian Significance Test, as a
mathematical formalism specifically designed to access the support for sharp statistical hypotheses,
and have shown that these hypotheses correspond, from a constructivist perspective, to systemic
eigen-solutions in the practice of science. In this article several issues related to the role played by
language in the emergence of eigen-solutions are analyzed. The last sections also explore possible
connections with the semiotic theory of Charles Sanders Peirce.