Man, thinking about time really does give me a headache. Think about this. If you were to for some reason want to kill your own mother in the past in order to destroy your existence, would you disappear after killing her? Most people think the answer is yes, but if you think more about it, wouldn't time just create another tangent in itself and move around the fact that you killed her. In this instance, your matter would not be destroyed and you would be forced to live where you were in the past, in the new future you created, or somewhere else you felt was prudent. I ask, what do other people think? I personally look at both the options and prefer the answer that one would disappear rather than stay. Sure science says that matter cannot be created or destroyed, but really, if this was true, one would be unable to go into the past in the first place. That i cannot believe due to the fact that catching up to the past using black holes is totally possible. Think about it. if black holes capture light, and said black hole contains the light spanning back to the time you wish to travel to, all one has to do is create something that is able to withstand a black hole's pull and use it's light history to travel through time. it's like rings in a tree stump. To me, it's relatively easy to contemplate, but I would like to see if anyone shares this kind of thought process.