For a couple of reasons, it is very important not to overlook the appeal to everyday cases. First, as we will see, a number of philosophers have questioned how effective EC is in its response to skepticism. If they are right, it matters a great deal that the effectiveness of that response is not EC’s sole basis. Second, as Keith DeRose says, “the contextualist’s appeal to varying standards for knowledge in his solution to skepticism would rightly seem unmotivated and ad hoc if we didn’t have independent reason from non-philosophical talk to think such shifts in the content of knowledge attributions occur” (2002, 169). But in fact, DeRose says, “[t]he best grounds for accepting contextualism concerning knowledge attributions come from how knowledge-attributing (and knowledge-denying) sentences are used in ordinary, non-philosophical talk: What ordinary speakers will count as ‘knowledge’ in some non-philosophical contexts they will deny is such in others” (2005, 172; 2006, 316; 2009, 47). Likewise, Cohen claims that examples such as the following “strongly [suggest] that ascriptions of knowledge are context-sensitive” (1999, 59):[11]