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The most common logical accounts of counterfactuals are couched in the [[possible world semantics]]. Broadly speaking, these approaches have in common that they treat a counterfactual ''A'' > ''B'' as true if ''B'' holds across some set of possible worlds where A is true. They vary mainly in how they identify the set of relevant A-worlds.

The most common logical accounts of counterfactuals are couched in the [[possible world semantics]]. Broadly speaking, these approaches have in common that they treat a counterfactual ''A'' > ''B'' as true if ''B'' holds across some set of possible worlds where A is true. They vary mainly in how they identify the set of relevant A-worlds.

反事实的最常见的逻辑解释是可能世界语义学。一般来说，这些方法的共同点是，如果B在A成立的某些可能世界中成立，那么它们就认为反事实 A > B为真。它们的主要区别在于如何确定相关A世界集的方式。

反事实的最常见的逻辑解释是'''<font color="#ff8000"> 可能世界语义 Possible World Semantics</font>'''。一般来说，这些方法的共同点是，如果B在A成立的某些可能世界中成立，那么它们就认为反事实 A > B为真。它们的主要区别在于如何确定相关A世界集的方式。

David Lewis's variably strict conditional is considered the classic analysis within philosophy. The closely related premise semantics proposed by Angelika Kratzer is often taken as the standard within linguistics. However, there are numerous possible worlds approaches on the market, including dynamic variants of the strict conditional analysis originally dismissed by Lewis.

David Lewis's variably strict conditional is considered the classic analysis within philosophy. The closely related premise semantics proposed by Angelika Kratzer is often taken as the standard within linguistics. However, there are numerous possible worlds approaches on the market, including dynamic variants of the strict conditional analysis originally dismissed by Lewis.