 Christensen (2010a) argues that higher-order evidence is distinctive because its import is agent-relative. While Aisha's information about hypoxia gives Aisha reason to doubt her beliefs about whether she will make it to Hawaii, it would have no such effect on another person looking at the same charts and dials from the safety of the ground. However, merely treating higher-order evidence as indexical does not seem to make it less puzzling; see Schoenfield 2018 for further discussion.