Can Time Travel Change the Course of History?

  • Thread starter QuantumTheory
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In summary, time travel is theoretically possible, but unlikely to happen in practice. Going back in time and altering the past is possible, but has potential consequences that are difficult to predict.
  • #1
QuantumTheory
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Does anyone know why the universe began?
Why did life on Earth began?
Are there any "right " religions?
What happens to you after you die? (Besides the usual process.)
What is the purpose of life?
Why is the sky blue?
Why is the universe black?
Is time travel theortically possible?
Is it impossible to go back in time before you created the time machine?
What would happen to you if you went back in time and killed your grandfather, before you were born?
If you go back in time, can you alter the past? What would happen if you did ? Would there be a different future?
 
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  • #2
QuantumTheory said:
Does anyone know why the universe began?
No.
Why did life on Earth began?
The chemistry was right.
Are there any "right " religions?
Every religion is right to its believers and wrong to everyone else.
What happens to you after you die? (Besides the usual process.)
Anybody who says more than the usual process has a lot of proving to do.
What is the purpose of life?
To continue.
Why is the sky blue?
Interaction of solar photons with electron shell of oxygen molecules.
Why is the universe black?
There hasn't been enough time since it became transparent for light from the most distant regions to reach us. So there's only a finite, not an infinite light reaching us, and it leaves most of the sky black.
Is time travel theortically possible?
Very theoretically, yes. It requires matter with negative energy; such a thing is not exactly impossible, but it sure ain't common!
Is it impossible to go back in time before you created the time machine?
This is a feature of one time travel scheme using wormholes.
What would happen to you if you went back in time and killed your grandfather, before you were born?
It would have to be before his child, your parent, was born to have any particular effect! Several possibilities: The world would change but nobody would realize it, and you wouldn't be in it. Or the world would branch into a universe in which you didn't succeed and one in which you did. Or nature would somehow conspire to prevent you from succeeding. Take your pick.
If you go back in time, can you alter the past? What would happen if you did ? Would there be a different future?
See my reply under grandfathercide.
 
  • #3
Great post SA. :approve:
 

FAQ: Can Time Travel Change the Course of History?

What is the purpose of asking a few questions?

The purpose of asking a few questions is to gather information and gain a better understanding of a topic or situation. By asking questions, scientists are able to gather data and form hypotheses, which can then be tested through experiments.

How do scientists determine which questions to ask?

Scientists determine which questions to ask by identifying gaps in knowledge and areas that need further exploration. They may also base their questions on previous research and observations.

Can asking too many questions hinder the scientific process?

Yes, asking too many questions can hinder the scientific process. It is important for scientists to focus on specific questions that are relevant to their research and avoid getting overwhelmed by too many ideas or questions.

How do scientists ensure that their questions are unbiased?

Scientists ensure that their questions are unbiased by using specific and precise language, avoiding leading or loaded questions, and considering different perspectives and potential biases. They may also use standardized questionnaires or surveys to gather data in a neutral and unbiased manner.

Can scientists change their research questions during the course of their study?

Yes, scientists can change their research questions during the course of their study. This may happen if new information or data is discovered that leads to a shift in the focus or direction of the research. However, any changes should be based on careful consideration and not made impulsively.

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