Abstract
<jats:title>Abstract</jats:title> <jats:p>This chapter advances the analysis of Wittgenstein’s notion of “hinges” as articulated in On Certainty, particularly the metaphor of the riverbank, where some beliefs resemble immovable rock while others shift like sand. Building on the initial distinction between stable, universal hinges and those more easily surrendered, the discussion develops a systematic framework that moves beyond Wittgenstein’s explicit remarks. Section 1.1 explores the de jure/de facto dichotomy, highlighting continuities and divergences with Wittgenstein’s work as well as prior contributions. Section 1.2) deepens the account of de facto hinges, showing their empirical and non-empirical varieties, and emphasizing their contingent yet normatively significant role. In contrast, de jure hinges are presented as constitutive of epistemic practices and mandated by rationality, whether in local or general form. Finally, the chapter introduces the intermediate category of “nurtured hinges,” whose fuller treatment is reserved for future inquiry.</jats:p>