Full Idea
Possible worlds, conceived of as abstracta, surely exist 'in every possible world'.
Gist of Idea
Does every abstract possible world exist in every possible world?
Source
E.J. Lowe (The Possibility of Metaphysics [1998], 12)
Book Reference
Lowe,E.J.: 'The Possibility of Metaphysics' [OUP 2001], p.248
A Reaction
A possible very infinite regress, if a particular possible world is distinguished from another only by being perceived from Actual Word 1 or Actual World 2.. How many possible worlds are there? The standard answer is 'lots', rather than infinity.