 Nothing precludes experimental philosophers from circumventing some of the concerns just noted by using experimental paradigms other than the administering of surveys. They may use reaction-time studies from cognitive psychology (Arico et al. 2011), empirical evidence from neuroscience (Allman and Woodward 2008; Greene et. al. 2001), evolutionary biology, or other sources. While such sources of evidence are not subject to the difficulties of surveys, they also appear unlikely to produce direct evidence of use to the verification project or the variability project because these projects require responses to the abstract and detailed linguistic descriptions of cases one typically presents in philosophical analysis. Indeed, Scholl (2007) suggests that the most methodologically satisfactory experimental philosophy will be primarily a version of the sources project implicating rather low-level processes immune, in virtue of their modularity, from the interpretive and pragmatic difficulties outlined above.