The philosophical quality of being able to exist together or coexist without contradiction.
From 'compossible' (com- 'together' + possible, from Latin 'possibilis') plus -ity suffix. A technical term coined by philosophers, especially Leibniz, to discuss metaphysical relationships.
Leibniz invented this term to solve a huge problem: if God is all-powerful and knows everything, why did He create a world with evil?—He argued God chose from worlds with 'compossibility,' meaning only coherent sets of possibilities could coexist.
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