 It is not obvious how to reconcile Division with the evident vagueness and context-sensitivity of expressions like ‘more similar than’. It seems implausible that all of this variation can be traced back to vagueness and context-sensitivity in ‘more natural than’ in such a way that Division comes out true in all contexts. One might appeal here to quantifier domain restriction: perhaps, in contexts where only psychological similarity matters, Division is true so long as the universal quantifier over properties is understood as restricted to psychological properties. However we may need more flexibility than this to allow both for contexts where psychological similarity matters a lot but bodily similarity matters a little and for contexts where bodily similarity matters a lot and psychological similarity matters a little.