Teleportation . . . coz what ever you do in the past you can’t exactly change it. Like in the movie (I forgot what) how ever the hero try to change what happend in the past, he may change the minute but the girl still died.
<a href="http://www.formspring.me/EROSANGELIQ?utm_medium=social&utm_source=blogger&utm_campaign=shareanswer">what ever's your fancy</a>