RT Book, Section T1 The fact/value entanglement as a linguistic illusion A1 González Castán, Óscar Lucas A2 Rivas Monroy, María Uxía A2 Cancela Silva, María Celeste A2 Martínez Vidal, Concepción AB This paper addresses four different, albeit related, issues concerning Hilary Putnam’s fact/value entanglement theory. It is organized around a series of questions. First, what set of problems does the theory attempt to resolve? The revision of the empiricists and the positivist traditions will be the main concern of this first section. Secondly, how does the notion of “fact/value entanglement” solves these problems? I argue that while Putnam has persuasively defended the possibility of an entanglement between descriptive functions and evaluative functions at the level of language use, he nevertheless provides us with only indirect indications about the existence and properties of the bearers of this kind of entanglement; namely the assumed existence of thick ethical concepts and their necessity for some central human practices. These indirect signs are not sufficient to buttress Putnam’s entanglement thesis between facts and values. Thirdly, what are the most appropriate candidates to play the role of bearers of the description/evaluation entanglement? I challenge the claim that the ontological notion of entanglement between facts and values, itself obscure, is indispensable. Instead, I argue that we can substitute the idea of fact/value entanglement for the simpler, and less problematic, notion of human action. Finally, does Putnam commit a petitio pincipii when he attempts to lay down the criteria by which to judge if a thick ethical concept is being appropriately used in a given situation? I argue that Putnam faces what I shall call “Nietzsche’s problem” – the problem of not prejudging, in giving the relevant examples for the discussion, how the situation should be morally valued. PB Brill SN 978-94-012-0584-9 SN 978-90-420-2397-0 YR 2008 FD 2008 LK https://hdl.handle.net/20.500.14352/120949 UL https://hdl.handle.net/20.500.14352/120949 LA eng NO González-Castán, Óscar L. (2008). "The Fact/Value Entanglement as a Linguistic Illusion", in Following Putnam’s Trail: On Realism and Other Issues. U. Rivas Monroy, C. Candela Silva, C. Martínez Vidal (eds.). Poznan Studies in the Philosophy of the Sciences and the Humanities, vol. 95, Amsterdam/New York, Rodopi, pp. 287-305. NO Este artículo fue escrito con el apoyo financiero del Proyecto de Investigación “Conocimiento e ideología: Un análisis para el mundo contemporáneo” de la Universidad Complutense de Madrid (PR1/05-13341). NO Universidad Complutense de Madrid NO Ministerio de Educación y Ciencia (España) DS Docta Complutense RD 16 jun 2025