Editing Multiverse (section)

=== Modal realism ===
[[Possible world]]s are a way of explaining probability and hypothetical statements. Some philosophers, such as [[David Lewis (philosopher)|David Lewis]], posit that all possible worlds exist and that they are just as real as the world we live in. This position is known as [[modal realism]].<ref>{{cite book|first=David|last=Lewis|date=1986|title=On the Plurality of Worlds|publisher= Basil Blackwell|isbn=978-0-631-22426-6|title-link=On the Plurality of Worlds}}</ref>