Full Idea
The governing fiction of possible worlds theory says that whenever something is possible, there is a world where it happens.
Gist of Idea
Governing possible worlds theory is the fiction that if something is possible, it happens in a world
Source
Stephen Yablo (Go Figure: a Path through Fictionalism [2001], 05)
Book Reference
Yablo,Stephen: 'Things: Philosophical Papers vol. 2' [OUP 2010], p.182
A Reaction
This sounds like the only sensible attitude to possible worlds I can think of.