Lewis on ‘Might’ and ‘Would’ Counterfactual Conditionals

Abstract

Letting denote ‘would’ counterfactual conditionals like (A) If I had looked in my pocket, I would have found a penny and letting denote ‘might’ counterfactual conditionals like (B) If I had looked in my pocket, I might have found a penny, David Lewis’s thesis (LT) regarding the connection between these two types of conditionals is that