There are different possible worlds {modality} {modal realism}.
types
Modality can be certain or eternal {epistemic modality}; depend on current, past, or future {temporal modality}; or be necessary, impossible, or possible {logical modality}.
comparisons
If something is necessary, it is true in all possible worlds. If it is possible, it is true in at least one possible world. If it is impossible, it cannot be true in any possible world.
time
World can be different at different times. Something can be true at all possible times. Something can be true outside time.
accessibility
Models and interpretations can allow people to know possible worlds.
Social Sciences>Philosophy>Metaphysics>Theories
6-Philosophy-Metaphysics-Theories
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Date Modified: 2022.0224