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Full Idea
One view of counterfactuals says they are not true, but are merely valid.
Clarification
'Valid' means logically legitimately (rather than being actually the case)
Gist of Idea
Counterfactuals are not true, they are merely valid
Source
Thomas Mautner (Penguin Dictionary of Philosophy [1996], p.114)
Book Ref
Mautner,Thomas: 'Dictionary of Philosophy' [Penguin 1997], p.114
A Reaction
This makes counterfactuals a branch of logic rather than of metaphysics. I find the metaphysical view more exciting as they are part of speculation and are beyond the capacity of computers (which I suspect they are).