Modal statements, like "Hillary Clinton could have won the 2016 US election" or "it is necessary that cows are animals", are part of everyday language. According to common-sense, some … 展开

Extended modal realism provides precise definitions of the terms universe, reality, and existence in order to distinguish them from the term world. The universe is the vast object extending in the dimensions of space, time, and modality. It is the totality of all things. The many … 展开

• Actualism
• David Lewis
• Four-dimensionalism
• Impossible world
• Measure problem (cosmology) 展开

A possible world is a way things could have been. According to modal realists like David Lewis, possible worlds are isolated entities. They are … 展开

The modal stage of the tree in the actual world is nowhere violet but it has violet parts at other modal indices. The tree as a whole is a modally extended entity encompassing not just the actual tree but also all its modal parts belonging to other worlds. Like in Lewis's … 展开

Most criticisms against modal realism in general also apply to extended modal realism. For example, various theorists have used 展开