Concept · Foundations
Possibility
A proposition is possible when it is true in at least one possible world; written as the diamond operator in front of the proposition.
Why it matters
Possibility is the dual of necessity and is essential for talking about what could have been and what might still be.
Where this shows up
Units and lessons using this concept
Following the links will take you to the page where this term is introduced in context.
Lessons (4)
Capstone: Modal Reasoning in Philosophy and ScienceModal Logic: Necessity, Possibility, and CounterfactualsFormalizing Modal ArgumentsModal Logic: Necessity, Possibility, and CounterfactualsThe Modal Operators and Their RulesModal Logic: Necessity, Possibility, and CounterfactualsWhat Is Modal Logic?Modal Logic: Necessity, Possibility, and Counterfactuals
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