Modality

Modality in metaphysics refers to the perspective that things could be different than they are. It explores the possibilities of what could have been, what must be, and what can't possibly be. This domain mainly deals with two concepts: 'necessity' - things that couldn't be otherwise, and 'possibility' - things that could have been different. It's like pondering if unicorns could exist or if gravity could have been absent. It's about understanding the boundaries of reality, not just as we know it, but in all possible ways.