KnowraPossible worldsLinked fromLinked fromThe 15 pages that link to Possible worlds, each with the reason it gives.All 15Broader topic 1Related 12Narrower topic 2Counterfactual historyNarrower topic: Counterfactual claims depend on comparing the actual past with a plausible alternative.Futures studiesNarrower topic: The idea of possibility provides a broad conceptual foundation for imagining alternative futures.