This is a preprint of an article published in Noûs, Volume 43, Issue 1, March 2009, Pages: 178-192,. http://onlinelibrary.wiley.com/doi/10.1111/j.1468-0068.2008.01701.x/abstract. The definitive version is available at www3.interscience.wiley.com doi: 10.1111/j.1468-0068.2008.01701.xIn two important recent books, John Hawthorne and Jason Stanley each argue that non-evidential factors, such as the cost of being wrong and salience of possible error, have a place in epistemological theorizing. This point is familiar from the work of epistemological contextualists, who emphasize non-evidential speaker factors: factors which, when present in a speaker's conversational context, affect the semantic content of her knowledge attributions. According...