The content of aliefs

Abstract

In “Against alief”, Mandelbaum (Philos Stud 165(1):197–211, 2013) argues that if aliefs—a sui generis kind of mental states originally posited by Gendler (J Philos 105(10):634–663, 2008a; Mind Lang 23(5):552–585, 2008b; Analysis 72(4):799–811, 2012)—are to play the explanatory role that is usually ascribed to them, their contents must be propositionally structured. However, he contends, if aliefs have propositional contents, it is unclear what distinguishes them from beliefs. I find Mandelbaum’s arguments in favour of the idea that aliefs must have propositional contents to be compelling. However, I think aliefs should only be credited with a deflated kind of propositional content that I will baptize as “semi-structured propositional contents”, since they are composed by representational units that are neither fully un-detachable nor fully re-combinable. As I will argue, this way of understanding the content of aliefs not only allows us to accommodate all the worries raised by Mandelbaum regarding the nature of their contents, but it also it helps explain why aliefs have some of the peculiar features that Gendler ascribes to them. Consequently, it gives to the advocates of aliefs new tools to defend, against Mandelbaum, that these are sui generis mental states with their distinctive functional role in our cognitive lives.