* Astronomy

The parallel world theory has one feature that is very disturbing - at every time event the universe can diverge into two parallel universes, with each separate universe inheriting the slight difference of the time event.
However, by incorporating destructive and constructive waves that travel through time, a unique timeline can be created that discriminates between our universe and parallel universes. ie The parallel universes will be destroyed by the existence of a unique timeline that incorporates our universe.