 Research in this area aims to understand why this effect arises and what implications it has for epistemology. One view is that people’s concept of belief truly does involve certain conditions that are not required by their concept of knowledge (Myers-Schulz &amp; Schwitzgebel 2013). An alternative view is that there is more than one sense of ‘belief,’ such that knowledge requires the mental state picked out by one of the senses but not the other. Within work that adopts this latter approach, there have been a number of more specific suggestions about how to spell out the difference between the two senses and what relation each has to the ordinary concept of knowledge (Rose &amp; Schaffer 2013; Buckwalter et al. 2015).