Palavras-chave:modal paradox, vagueness, modal logic, essentialism, possibility.
In this paper we are going to deal with a paradox related to metaphysical possibilities – possibilities ruled out by modal metaphysical principles. For our purposes here, the relevant modal principle that we are concerned about is linked to essentiality of the material composition of an artefact. It will be presented here some of the many different formulations for the modal paradox available in literature. There are so many different version of the paradox. Actually, each philosopher who has written about the subject matter usually offer his own version of the paradox. As soon as the paradox’s version have been presented, it will be advanced some solutions to the modal paradox available in the literature. Beginning with some more general solutions which go against either essentialist theses or modal discourse itself. And then, presenting some of the more important solutions properly to the modal paradox.