The first published refutation of it was presented in the text In Defense of the Fool and discusses the absurdity of a lost island.
One extension to this idea involves using axiom S5 to show that necessity exists when there is a possibility in one of many possible worlds. That extension to this idea, builds upon Norman Malcolm's version of it and defines a quantity called maximum excellence. The first published refutation of it was presented in the text In Defense of the Fool and discusses the absurdity of a lost island. Immanuel Kant pointed out its flaw in assuming perfection is predicated by existence. Statements that express beliefs, or modalities, were used by Plantinga to update this idea. It relies on the premise that a being existing within the mind is inferior to a being existing both in the mind and in reality. Introduced in the Proslogion, for 10 points, name this proof of God's existence presented by Anselm
One extension to this idea involves using axiom S5 to show that necessity exists when there is a possibility in one of many possible worlds.
ontological argument