Full Idea
It seems to me inconceivable that a possible world exists that is an exact physical duplicate of this world but lacking wholly in intentionality.
Gist of Idea
It seems impossible that an exact physical copy of this world could lack intentionality
Source
Jaegwon Kim (Mind in a Physical World [1998], §4 p.101)
Book Reference
Kim,Jaegwon: 'Mind in the Physical World' [MIT 2000], p.101
A Reaction
Personally I can't conceive of such a world lacking qualia either. The physical entails the mental, say I.