He points out that it ultimately leaves those questions unresolved because it is a metaphysical issue that can not be resolved by empirical science .
Ellis says that scientists have proposed the idea of the multiverse as a way of explaining the nature of existence .
Ellis points out that it ultimately leaves those questions unresolved because it is a metaphysical issue that can not be resolved by empirical science .
Ellis says that scientists have proposed the idea of the multiverse as a way of explaining the nature of existence .