The distinction between what is—the realm of facts, and what ought to be—the realm of values; ‘the supposed ontological difference between how the world is and how people evaluate the world’ (N. Castree, R. Kitchin, and A. Rogers, 2013). However, as Levine (2008) A J. of Philosophy & Geog. 11, 1, 91 observes, in many cases considerations of fact and value cannot be neatly separated. Hansson (2010) J. Risk Res. 13, 3, 231 tackles the fact–value distinction with relation to risk.