 This Rylean distinction between knowing how and knowing that has been prominently challenged, beginning in 1975 with the publication of Carl Ginet’s Knowledge, Perception, and Memory. Ginet argued that knowing how to do something was simply knowing that a particular act was a way to do that thing. This challenge was extended and systematized by Boër and Lycan (1975), who argued that knowing who, knowing which, knowing why, knowing where, knowing when, and knowing how—all of the varieties of knowing wh-, as they called it—were all just different forms of knowing that. To know who is F, for instance, was simply to know that a particular person is F. To know why p is simply to know that a particular thing is the reason why p. And to know how to F was simply to know that a particular act is a way to F. This view was elaborated in considerable detail by Stanley and Williamson 2001, and then challenged or refined by many subsequent writers (see, for instance, the essays in Bengson and Moffett 2011, and also Pavese 2015 and 2017).