 Since our focus here is on essentialism as it is employed in the epistemology of modality, we refer readers interested in metaphysical issues concerning (FE) elsewhere. (For discussion in favor of (FE), see Lowe 2008, 2012; Hale 2002, 2013, 2018; Kment 2014, 2021; Rosen 2015; Jago 2021; Tahko 2017, 2018; Wallner 2020; Wallner &amp; Vaidya 2020; and Wilsch 2017. For criticism, see Della Rocca 1996a,b; Gorman 2005; Zalta 2006; Correia 2007; Cowling 2013; Wildman 2013; and Livingstone-Banks 2017; as well as Leech 2018; Mackie forthcoming; Noonan 2018; Romero 2019; Van Cleve 2018; and Wildman 2021.)