People will probably keep doing the things people do till the wiring
in their heads is changed, connected to, or doped. Till then its just
another human episode with evolving gadgets.
A temporal paradox is an paradoxical situation in which a time
traveler interferes with the time line involved in his own existence.
The typical example is that of the grandfather paradox, wherein a time
traveler goes back in time and kills his grandfather before his father
is conceived. It is a paradox because if this occurs, he will never be
born, and therefore never be able to travel back in time to kill his
grandfather. This example is one type of causality loop.
http://en.wikipedia.org/wiki/Temporal_paradox
A predestination paradox, also called either a causal loop, or a
causality loop and (less frequently) either a closed loop or closed
time loop, is a paradox of time travel that is often used as a
convention in science fiction. It exists when a time traveller is
caught in a loop of events that "predestines" him or her to travel
back in time. This paradox is in some ways the opposite of the
grandfather paradox, the famous example of the traveller killing his
own grandfather before his parent is conceived, thereby precluding his
own travel to the past by cancelling his own existence.
Because of the possibility of influencing the past while time
travelling, one way of explaining why history does not change is by
saying that whatever has happened was meant to happen. A time
traveller attempting to alter the past in this model, intentionally or
not, would only be fulfilling his role in creating history as we know
it, not changing it.
http://en.wikipedia.org/wiki/Predestination_paradox
http://en.wikipedia.org/wiki/Primer_(film)#Plot
http://en.wikipedia.org/wiki/Slipstream_%%282005_film%%29
