RULES: you must guess at the first one to post your own, only applies to first page.

FIRST PARADOX: if u go back in time and kill ur grandfather before he has kids, what happens?

ok, ill start things off, i believe that there will be an infinate loop in tim because you will kill him, you will never be born, so u never killed him, so u do exist, but exactly the same as befor, with no knowledge of u killing ur grandfather, so u do it again, and again, and forever, stuck in time.

makin me sad guys :[

i believe you go back in time AT ALL you ruin the universe.

in real life, it would paradox, and form a time loop which would destroy the universe.

and in... someones book, can't remember whos, your grandpa would be dead, and you would be dead. end of story.

in sczhtring theory, if you traveled back and killed your grandpa, you would still exist, but your "other self" would never be born

if somebody falls down a flight of stairs, and somebody trips up the stairs, if they hit each other in the middle of the stairs, will they levitate?

you all make my head spinn..... no they dont levitate, they all falls down i guess

Either you appear where you were right before you travelled back in time, or some kind of crazy alternate universe thing.

Nothing would happen if you went back in time and killed your grandfather. Why? Because once he's dead, in the future, there would either be A- no you, or B- no grandfahter for you to go back in time to kill, and thus, no one to make the time machine.

The better question would be "WHY WOULD I WANT TO KILL MY OWN GRANDFATHER??!!"

...Topic-winner.

It's impossible to go back in time and kill your grandfather. Plus what the person two posts before said.

Why is it impossible??

If there is a mime lost in the woods, and a tree falls down and kills him, would anybody care?

No, wrong place wrong time The question what was he doing the woods in the first place



They would just become a larger mass and fall faster due to gravity.

I leave you with my own not so much paradox but proverb.

If you immediately know the candlelight is fire, then the meal was cooked a long time ago.

I believe it was from Stargate that i heard this

Yes. the Mime.

In the 2002 version of the movie "The Time Machine" *don't read this if you plan on seeing the movie and don't want it spoiled*, the main character makes the time machine so that he can save his fiance that died. However, when he goes back to save her, she ends up dying in another way. The "Über-Morlock" explains this towards the end of the movie with this quote:

"You built your time machine because of Emma's death. If she had lived it would never have existed, so how could you use your time machine to go back and save her? You are the inescapable result of your tragedy."

^imdb.com

Also, from the book See You Later by Christopher Pike:

'"Do you know what it means to violate causality?"

I was familiar with the topic from all the science fiction I had read. It was the main problem scientists had with the concept of time travel. It was why they thought it was impossible. Simply put, the problem read: How can something go back to the past and affect its future in such a way as to prevent its backward jouney through time? Science-fiction writers tend to phrase the dilemma by asking how someone could go back in time and kill his own grandmother. If the man in question kills his grandmother at a young enough age, then his own mother will never be born, and he'll never be born. The end result being, of course, that it would be impossible to kill his grandmother in the first place.'