Full Idea
The anti-haecceitist strategy holds that a purely qualitative characterisation of a possible world would be a complete characterisation; there is, on this view, nothing to being a particular individual other than meeting certain qualitative conditions.
Gist of Idea
Anti-haecceitism says there is no more to an individual than meeting some qualitative conditions
Source
Robert C. Stalnaker (Mere Possibilities [2012], 3)
Book Reference
Stalnaker,Robert C.: 'Mere Possibilities' [Princeton 2012], p.52
A Reaction
Not quite the same as the bundle theory of objects, which says the objects are the qualities. This is about individuation, not about ontology (I think). I don't like anti-haecceitism, but I also don't like haecceitism. Hmm.