Carline Klijnman

In response to widespread voter ignorance, Jason Brennan argues for a voting ethics that can be summarized as one negative duty: do not vote badly. The implication that abstaining is always permissible entails no incentive for citizens to become competent voters or to vote once competent. Following the Condorcet Jury Theorem, this can lead to suboptimal outcomes, suggesting that voter turnout should concern instrumentalist epistemic accounts of democratic legitimacy. This could be addressed by adding two positive voting duties: to make an effort to become a competent voter; and, once competent, to vote.

C. Thi Nguyen's (2020) recent account of echo chambers as social epistemic structures that actively exclude outsiders’ voices has sparked debate on the connection between echo chambers and epistemic injustice (Santos 2021; Catala 2021; Elzinga 2021).In this paper I am mainly concerned with the connection between echo chambers and testimonial injustice, understood as an instance whereby a speaker receives less epistemic credibility than they deserve, due to a prejudice in the hearer (Fricker 2007). In her reconstruction of the types of testimonial injustice, Catala implicitly equates incidental testimonial injustice as resulting from epistemic prejudice and systematic testimonial injustice as resulting from identity prejudice. As I will argue, there as certain cases that fall in between these interpretations, namely instances of incidental testimonial injustice, whereby the impact on the speaker is localized, but where the credibility deficit nevertheless results from identity prejudice. One example of how this can manifest is the structural distrust against health-care experts in anti-vaccination echo-chambers, wherein said experts’ testimony is dismissed due to unwarranted assumptions regarding their motives qua their social type. To understand the importance and severity of the testimonial injustices in echo chambers, we need to look beyond the specific harms that are done to the targeted speakers and the immediate loss of knowledge, but also take into account the consequences for fairness in public deliberation—the latter being a fundamental condition for procedural democratic legitimacy.