What if you have travelled back in time before your parents were born and killed your grandparents?

Question

Then neither your parents nor you could have been born. Therefore, who killed your grandparents?

Answer 1

Easy. You yourself is the murderer. The solution of this paradox was proposed by Hugh Everett. He develop the concept of Many World Interpretation: a Parallel Universe.

You kill your grandparent in the past. In that way you create a whole new future in another world, which is independent from your initial world. If you somehow manage to back to the future, you'll arrive in a brand new world who does not recognize your existence at all....

BTW, your initial world where your grandparent was not killed and still alive is alo exist, independently from the world where you kill your grnadparent. That's why this theory is called Many World Interpretation. There are SO many world out there!

Weird? It's all possible in Quantum Physics....

Answer 2

This is known as the grandfather paradox . If you kill your grandfather you would not exist in the future but even this drags a new line from the reality you once used to know and changing it (alternate reality - another dimension, etc..). But if you would die then you would not have gone in the past to kill him in the first place so the time traveller killer, would still have been born and yet again tried to kill him... it is an paradox with no ending... so the only way to get back to your own reality is to manage to kill yourself or stop trying to kill your grandfather. But dragging a line that adds a new dimension would cause the end of the world.... as there cannot be 2-3-4 or an infinite number of dimensions without entering in one and other at one time thus causing an explosion.

Answer 3

You have correctly defined the 'Time Paradox'.

If you have traveled in a time bender like Dr Who's Tardis, you cannot kill your grandparents, because this requires your existence, which in turn requires their existence.

On the other hand, if Nathan Brazil has let you use the Well of Souls, than the bit of data that is your soul, has been isolated, the VR program that is the universe has been reset to a prior saved state, and your data has been reintegrated. Your murderous heart is free to indulge itself. You will never be born into the universal replay, but there's no paradox, because you came from a prior version.

Hope this helps, please avoid my timeline.

Answer 4

Time travel has never happened, so we simply don't know. All we can do is make up answers.

However, among the made-up answers (cf. first source), generally speaking there are three kinds of answers.

1. You can't do it. When you try to jump back in time and kill your ancestors, something must go wrong. (Notably, this model seems to be the one best supported by modern physics - cf. second source.)

2. When you go back in time, it's to a parallel dimension (possibly created at the moment of time travel). As a result, you only kill the alternates of your grandparents, and therefore no paradox occurs. (This one is very popular among writers - it was used back in 1941 by L. Sprauge de Camp in "Lest Darkness Fall" and up in 2000 by Eric Flint in "1632".)

3. When you go back in time, you erase the part of the timeline between the present and the time you jumped back to (cf. third source for an example of this model).

Answer 5

A fourteen-year old boy killed my grandparents.

I'm not kidding.

Your question is an impossibility as time travel is not possible, but a 14-year old boy really did murder my grandparents. It made headline news at the time.

Answer 6

it either could never actually happen or make no difference... as in when you think about actually doing and set out to doing it you would seize to exist or a splintered line of existence (parallel universe) is created at that point!
Which might make it impossible to actually go back to your original splinter strand of time!!! and if you can't go back what is the point of doing it right?!?!? this paradox has been around for a while and there is some extensive different ways of putting these two different main stream views...! have fun!

Answer 7

You killed your own grandparents in the present, before you could be born.

Be cause the present you were in wasn`t altered until you went back into time.

Answer 8

This would involve moving back in time and accessing a different one of the infinite potential worlds that exists in the 5th dimension; over in that dimension you never existed, since both your grandparents died childless. This world, OTOH, would continue on, with your departure into the vortex of 4th-dimensional travel but a tiny blip in the otherwise linear history.

Answer 9

How does does line of thought help in anyway todays headlines. If I did go back in time., it would not be to murder anyone, not even your grandparents so you wouldnt be born.

Answer 10

The slave vendors! enable's see, in case you replaced the colour of your epidermis and rapidly grew to become a slave.... then you definately might desire to adventure the dehumanization, abuse and hatred that's so obtrusive at present. I worked in Bellflower, CA and a affected person got here into the shop and pronounced out loud "...i don't % her to attend on me... she's a N____, in basic terms look at her." properly prejudice human beings like this woman will probable die all on my own. She probable killed all and sundry who appeared at her incorrect. She replaced into wearing an Afro wig and appeared like Chaka Khan. besides, she killed my grandparents and due to this she's rich at present greed off the backs of yet another.