COUNTERPARTS AND COUNTERPOSSIBLES: IMPOSSIBILITY WITHOUT IMPOSSIBLE WORLDS.

The article discusses three recent discussion on counterpossible and counterfactuals. It first discusses cases of scientific modeling requiring counterpossible conditionals, second grounding theorists who see metaphysical explanations as structurally similar to causal explanations need counterpossibles to explicate grounding-dependence relations and discussed; and that laws of nature metaphysically supervene and examines how same situation would be under different scientific conditions.