In this paper, we reconsider the notion of epistemic trespassing and attempt to explore possible scenarios in which it could lead to positive outcomes in scientific research and information dissemination. As we will point out, some of the significant discoveries in the history of science would not have been possible were it not for the epistemic trespassers, whose shift in paradigm changed the approach to specific issues for the better. Furthermore, we will present instances where individuals, often labeled as ‘trespassers’ (...) – those who venture into fields outside their expertise – can be considered trustworthy and reliable sources of testimony. Consequently, epistemic trespassing turned out to be essential for the advancement of science. Epistemic trespassing in our age is virtually inevitable – whether it be from a political perspective (to preserve democratic values) or due to purely practical reasons (i.e. searching for information online). There are interdisciplinary fields where a strictly negative characterization of epistemic trespassing would question their methodology since these disciplines rely on experts from various fields. For these reasons, we advocate for a more charitable approach to epistemic trespassing and greater public education to help them distinguish between correct and false information. (shrink)

The term ‘epistemic trespassing’ has recently been coined to denote a person’s judgments regarding a domain where they are not epistemic experts. In this paper, I focus on expert trespassing testimony – that is, testimony by an expert in a domain of expertise other than his own. More specifically, I focus on intra-scientific trespassing testimony between scientific collaborators. By developing a number of distinctions, I argue that while intra-scientific trespassing testimony may seriously hamper scientific collaboration, it does not invariably do (...) so and may even be beneficial to it. (shrink)

Jennifer Lackey argues that knowing that p is not sufficient for being epistemically properly positioned to assert that p. Where that knowledge is entirely second-hand and the subject is an expert, the subject is not properly positioned to make such an assertion—since experts are held to higher epistemic standards. We reject Lackey’s argument. In particular, we argue that the division of labour in science makes isolated, second-hand assertions by experts both inevitable and frequent.

An epistemic trespasser is someone who lacks expertise in a domain yet expresses an opinion about its subject matter based on their own assessment of the evidence. Epistemic trespassing is prima facie problematic, but philosophers have argued that it is appropriate when the trespasser possesses relevant skills and evidence. We argue that this defence is available to epistemic trespassers more often than most philosophers have recognized, but it does not vindicate trespassing. The justified trespasser must also possess an appropriately refined (...) sense of how and to whom they ought to defer, with ‘deference’ understood as taking opinions and the shape of debates very seriously in deliberation, and as appropriate caution in dissent. This sense of what we call the guardrails is constituted largely by a kind of know-how, which arises from long experience in a domain: the epistemic trespasser almost always lacks this know-how. (shrink)

The world is abuzz with experts who can help us in domains where we understand too little to help ourselves. But sometimes experts in one domain carry their privileged status into domains outside their specialization, where they give advice or otherwise presume to speak authoritatively. Ballantyne calls these boundary crossings “epistemic trespassing” and argues that they often violate epistemic norms. In the few cases where traveling in other domains is permissible, Ballantyne suggests there should be regulative checks for the experts (...) who are crossing domain boundaries. I argue that boundary crossing is warranted more often than Ballantyne allows. And while Ballantyne argues that boundary crossing is prima facie epistemically problematic, I contend that many cases of boundary crossing are not properly instances of “trespassing,” and, therefore, raise no prima facie epistemic concerns. I further argue that identifying cases of what I call “epistemic neighborliness” bolsters Ballantyne’s project, making it easier for novices and other experts to identify epistemic trespassing along with its epistemic problems. (shrink)