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December 7th, 2017, 12:50 AM   #11
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Decart said: "If I think, I alive"; also, if you kill your father/grandfather in preteen years.
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December 7th, 2017, 02:13 AM   #12
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Quote:
Originally Posted by weirddave View Post
That implies the only way to avoid a paradox is if going back in time isn't possible.
Haha! How convenient!
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December 7th, 2017, 04:43 AM   #13
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Originally Posted by shaharhada View Post
Decart said: "If I think, I alive"; also, if you kill your father/grandfather in preteen years.
I meant Descartes
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December 7th, 2017, 05:13 AM   #14
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Quote:
Originally Posted by weirddave View Post
That implies the only way to avoid a paradox is if going back in time isn't possible.
I think you may have hit on something. Wish I had followed my thought to its logical conclusion.
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December 7th, 2017, 09:49 AM   #15
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Quote:
Originally Posted by AplanisTophet View Post
Ever play the original Final Fantasy for Nintendo? I'm pretty sure they solved the paradox in that.

https://www.gamefaqs.com/boards/6058...ntasy/58570310
Haha, I will play it if I get a chance
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December 7th, 2017, 09:49 AM   #16
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Originally Posted by JeffM1 View Post
A = "a person went back in time and killed his grandfather when the grandfather was 2 years old."

B = "the person who went back in time was born."

not B = "the person who went back in time was not born."

If A is true, the person who went back in time and killed his grandfather while the grandfather was incapable of fathering anyone must have been alive and so was born.

If A is true, the person who went back in time and killed his grandfather while the grandfather was incapable of fathering anyone could never have been born and so was not born.

If A is true, B is true and not B is true. Therefore A is false. There is no paradox.
But, if A is false, then B is false and not B is false. Hence, A is true.
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December 7th, 2017, 09:50 AM   #17
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Originally Posted by weirddave View Post
That implies the only way to avoid a paradox is if going back in time isn't possible.
But it is theorized that we can be able to travel to past through wormholes.
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December 7th, 2017, 09:50 AM   #18
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Quote:
Originally Posted by shaharhada View Post
Decart said: "If I think, I alive"; also, if you kill your father/grandfather in preteen years.
Quote:
Originally Posted by shaharhada View Post
I meant Descartes
In the time period that I mentioned, the grandfather is eliminated, so he is not able to think and not alive. But in the exclusion in the timeline that I mentioned, in that grandfather can think and is alive until his natural death.
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December 7th, 2017, 10:07 AM   #19
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If you born and you mom died in the childbirth, you are not dead. You are not connected to the other man not by body and not by mind. So, if you kill any person in the world in any period time it not affect you. You still live, even, you kill your father or grandpa not matter in any time. In physic the time go to the future but not Necessarily. it can stop by technologies.
The man is social creature so if you kill people you be alone but you don't die. You heard on somebody that kill other and dead by himself. No, Right?! So why you think if you go the the past you will die. Your grandapa is not god or somebody that can harm you by killing him. On contrary, you can kill him and stay a live. He flash and blood and not something else.
Don't forget what I said your mother can be died in borning time and the baby [you] will be aliave.
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December 8th, 2017, 08:23 AM   #20
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Originally Posted by Neonus View Post
But, if A is false, then B is false and not B is false. Hence, A is true.
If A is false, then either B is false (meaning the putative person being discussed was not born) or not B is false ( meaning that person was born).

There is no contradiction in asserting B or not B. "Tom was born or Tom was not born" is a necessarily true statement. There is a contradiction in asserting B and not B.

If you murdered your grandfather when he was two, then you must have been born (in order to do the deed) AND not have been born (because then you lacked a father or mother). If you did not murder your grandfather, you could have been born (if you are a real person) OR not born (if you are not a real person).

There is no paradox. There are merely restrictions on what can be done with a wormhole if such things even physically exist.
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