Full Idea
Is the world - and are all possible worlds - constituted by purely qualitative facts, or does thisness hold a place beside suchness as a fundamental feature of reality?
Gist of Idea
Are possible worlds just qualities, or do they include primitive identities as well?
Source
Robert Merrihew Adams (Primitive Thisness and Primitive Identity [1979], Intro)
Book Reference
'Metaphysics - An Anthology', ed/tr. Sosa,E. /Kim,J. [Blackwell 1999], p.172
A Reaction
'Thisness' and 'suchness' aim to capture Aristotelian notions of the entity and its attributes. Aristotle talks of 'a this'. Adams is after adding 'haecceities' to the world. My intuitive answer is no, there are no 'pure' identities. We add those.
Related Idea
Idea 14512 Moderate Haecceitism says transworld identities are primitive, but connected to qualities [Adams,RM]