Full Idea
The subjunctive conditional has no place in an austere canonical notation for science - but that ban is less restrictive than would at first appear.
Gist of Idea
Counterfactuals have no place in a strict account of science
Source
Willard Quine (Word and Object [1960], §46)
Book Reference
Quine,Willard: 'Word and Object' [MIT 1969], p.225
A Reaction
Idea 15723 shows what he has in mind - that what science aims for is accounts of dispositional mechanisms, which then leave talk of other possible worlds (in Lewis style) as unnecessary. I may be with Quine one this one.
Related Idea
Idea 15723 Either dispositions rest on structures, or we keep saying 'all things being equal' [Quine]