Full Idea
The indeterminacy between 'rabbit', 'rabbit stage' and the rest depended only on a correlative indeterminacy of translation of the English apparatus of individuation - pronouns, plurals, identity, numerals and so on.
Gist of Idea
Indeterminacy translating 'rabbit' depends on translating individuation terms
Source
Willard Quine (Ontological Relativity [1968], p.35)
Book Reference
Quine,Willard: 'Ontological Relativity and Other Essays' [Columbia 1969], p.35
A Reaction
This spells out the problem a little better than in 'Word and Object'. I just don't believe these problems are intractable. Quine is like a child endlessly asking 'why?'.