A Theory On Causality
A time machine allows you to traverse time not dimensions therefore your machine could not travel to parallel dimensions. However you can navigate into a previously unfounded "dimension" by for example going into the past and killing your grandmother before your birth. "But that a paradox" you all cry ... No actually you have just created a parallel dimension where you exist because you came back through time... Therefore putting you in a different parallel dimension still with your time machine allowing you to hypothetically travel to any parallel universe. although to travel back you would need to interfere in your own personal timeline which might ( Under the right circumstances ) create another parallel dimension ... Yeah ... Annoying ...
I am unsure whether this has been suggested before ... Help please
