Full Idea
if there are worlds where there are causal powers and/or lawful connections, then they are worlds in which the counterfactual theory of causation is false, because there causes produce the effects, regardless of any possible world.
Gist of Idea
Counterfactual theories are false in possible worlds where causation is actual
Source
R.D. Ingthorsson (A Powerful Particulars View of Causation [2021], 9.6)
Book Reference
'Oxford Handbook of Philosophy of Time', ed/tr. Callender,Craig [OUP 2013], p.166
A Reaction
A nice modern instance of turning the tables. Come to think of it, possible worlds theories are just asking for that. Are there possible worlds in which there are no other possible worlds? Or the possible worlds are inaccessible?
Related Idea
Idea 22636 Every philosophical theory must be true in some possible world, so the ontology is hopeless [Ingthorsson]