The possibility of an individual’s multiple existences within this observable universe and other universes has been addressed with equal vigor by both science and religion. Science would suggest that multiple existences could be simultaneous—only the space-time coordinates of existence would be different. Religion, on the other hand, suggests that multiple existences must be sequential: one existence in this world, followed by another in Heaven, Valhalla, Paradise or Hell.
The concepts of both varieties of multiple existences—simultaneous and sequential—assist believers in finding courage. Death in any one existence is less fearsome if, within other existences, life might continue.
(From Dr. Rodger Swift’s Abandoned Lab Journal.)