 This purposely avoids appeal to any special relationship that the mapped individuals may bear to each other (such, e.g., occupying corresponding locations in their respective worlds). This is to remain as neutral as possible on such issues, and because any features used to pick out the mapped things would automatically then globally supervene on any properties whatever (see McLaughlin 1995, 1997a). See Steinberg 2014 for an alternative way of characterizing world-wide patterns of property distribution.