The argument does little to show that other possible worlds are concreta, since describing them as 'ways things could be' makes them sound like properties, which are arguably abstracta

The little ‘argument by paraphrase’ from Counterfactuals is a long way from an argument for Lewis’s form of modal realism. For one thing, the argument relies on taking a folksy paraphrase as metaphysically revealing; perhaps we would be better off treating this as just a careless manner of speaking. For another, the folksy paraphrase Lewis uses isn’t obviously innocuous; like many other abstraction principles it could be hiding a contradiction. And the argument does little to show that other pos