Time travel and Multiverse theory:

The grandfather paradox is impossible. In fact,
all paradox is impossible. The Everett-Wheeler-
Graham or multiple world theory is correct. All
possible quantum states, events, possibilities
and outcomes are real, eventual and occurring.
The chances of everything happening someplace
at sometime in the superverse is 100%. (For all
you scientists out there, if Schroedinger's cat
had a time machine, he might not be in the box
at all).
Time is not linear, it more like a web of
parallel universes. Imagine walking into a
room of mirrors, like a carnival funhouse...
you look in the mirrors and you can see different
versions of yourself. Looking to the left or to
the right you can see these versions of
yourself stretching out into infinity. These are
different versions of yourself living in
different universes all at the same time, and
when you step forward in time it is like stepping
into the next room, the other versions of
yourself all do the same each going into a
different parallel universe.