“…The second background principle driving D3 is the thesis that, in order for a fact p to provide one with (some, sufficient, decisive) reason to Φ, one must have the ability to Φ (Sylvan 2015(Sylvan , 2018 or know how to Φ (Lord 2018: Ch.4). To deny this is to affirm the idea that one can have (some, sufficient, decisive) reason to Φ even though one is unable to or doesn't know 8 Broad factualism is a prominent position in the literature on the normativity of action (Alvarez 2010, Dancy 2000, Kiesewetter 2017, Parfit 2011, Raz 1999, Scanlon 1998, Schroeder 2007, Skorupski 2011, Thomson 2008, and Whiting 2014 and the normativity of belief (Kiesewetter 2017;Littlejohn 2017;Lord 2018;Schroeder 2015;Sylvan 2015Sylvan , 2016Sylvan , 2018and Whiting 2014). how to Φ.…”