Quando a Metáfora Falha

"Quando a Metáfora Falha" is an upcoming book in philosophy of science by Marcio Alexandre Afonso Polizelli, with a scheduled release date in 2026. Its subtitle, "Uma Crítica Biológica ao Cisne de Popper," signals the book's central argument: a biological critique of the swan metaphor as used by Karl Popper in his account of falsifiability and induction. The work engages with scientific language and taxonomy as tools for evaluating the limits of Popper's famous example, in which the discovery of black swans is invoked to illustrate how a single counterexample can overturn a universal statement. Polizelli's approach situates this epistemological debate within questions of biological classification, probing how the adequacy — or inadequacy — of scientific metaphors affects philosophical arguments about the structure of knowledge.