Epistemic vices are character traits that make us bad thinkers. Usually we think of vices and virtues in relation to ethics. The vices include cruelty and dishonesty and selfishness – failings of character that make us bad people and which are corrected by the cultivation of virtues and other excellences of character, like compassion and honesty. But we shouldn’t confine ‘vices’ to moral failings of character. We speak of vices of the mind, too, like arrogance, dogmatism, and closed-mindedness (“He’s so arrogant!”, “She’s so dogmatic!”). Alongside those examples, there are also less-obvious epistemic vices, with names like ‘epistemic insouciance’ and ‘epistemic self-indulgence’.
Over the last decade, a new subdiscipline has emerged devoted to studying the nature, identity, and significance of epistemic vices – vice epistemology. It’s sister discipline is virtue epistemology, which focuses on the virtues of the mind. Most modern work in vice epistemology falls into three sorts, each of them represented in our upcoming edited collection, Vice Epistemology.