Hinge trust*

Trust is central to epistemology, particularly in accounts of testimony, where it describes the relationship between a hearer and a speaker (or trustor and trustee), enabling the acquisition of information. The speaker's trustworthiness—marked by sincerity and knowledge—is essential for testimony to transmit knowledge or justified belief. However, trust's nature and role remain conceptually elusive, as the current debate highlights. This paper addresses the foundational question of what trust entails, rather than the conditions under which one is trustworthy. Specifically, we examine Wittgenstein's On Certainty to propose a characterization of trust in its most fundamental form, termed “hinge trust.” Hinge trust is a stance preceding the ability to form justified beliefs, directed not only at people but also at perceptual faculties, objects, and the environment. It underpins our epistemic practices, particularly in acquiring epistemic hinges essential for reasoning and inquiry. Building on this, we advocate a “trust-first” framework, analogous to the “knowledge-first” approach in epistemology. Trust is conceptualized as a primitive stance, distinct from “reliance +” a reactive attitude, or goodwill or commitment. These elements, while significant, are not constitutive of trust. Additionally, we explore the interplay between trust and distrust, arguing that trust is both conceptually and axiologically prior to distrust. Finally, we address the role of trust in testimony and hinge epistemology, demonstrating its foundational significance.