Is time travel possible?
Debate Rounds (4)
round one: Acceptance and introduction
round two: First argument
round three: Reply and more arguments (if there are more)
round four: Reply and conclusion, termination. No new arguments in this round!
yuvalne forfeited this round.
Time travel is difficult. Very difficult. But I still believe it's possible. (Not today, sure. If it was, I'd have traveled back and prevented my forfeiting.)
First of all, time isn't simple as most people think. It's more like, you know what? Perhaps it's better that an expert will explain: https://youtu.be...
Time and space aren't different things at all. As Einstein proved in General and Special relativity, time is actually linked to the space, which makes the spacetime. Spacetime, as he claimed, can be bent, and make some strange effects.
First of all, the wormholes. Einstein-Rosen bridges, more known as wormholes, are "shortcuts" in the universe. Wormholes not only allow to travel in space, but also in time. (Because space and time are actually one thing, remember?) If a wormhole could be created and controlled, it can allow time travel quite easily. (wormholes:https://en.wikipedia.org... wormholes in simple English:https://simple.wikipedia.org...)
The next option is Tipler cylinder. The cylinder could enable time travel in one of the two conditions: if the cylinder is infinite, which is possible using the ancient cosmic strings (https://en.wikipedia.org...) or exotic matter (https://en.wikipedia.org...). Both possibilities are constantly researched, and sooner or later one of them might be solved. (about Tipler cylinder: http://www.andersoninstitute.com...)
The last solution and my favorite is the TARDIS bubble. It's a pretty complicated idea, but it is science. I think that I'm not capable of explaining the idea without quoting the entire paper, so you are invited to read it by yourself. Simple version: http://www.extremetech.com... , full version: http://arxiv.org...
If there are so many ways that will probably will be within reach in the future, I believe one of them will be achieved.
Before going any further I would like to say to argue that something is impossible is foolish and ultimately paradoxical thus I will be arguing that current theories of time travel are impossible as I can not possibly know all things at all times.
I do not believe time travel is possible as the theories to do so are from a perspective of our current understanding of science. The idea of trying to define a way to travel in time at our current tech level is analogous of a Roman monarch waxing about an internal combustion engine.
We only have math to support such theories, I have yet to read one that supplies actual numbers along the lines of energy or supplies it would take to construct such a machine to travel through time. This is important as though there may be math to support such travel if the means to do such travel are impossible to achieve it thus makes the travel itself impossible.
I don't think an argument about paradoxes are reasonable as if they were relevant we would already know of them.
I, for example, do not try to understand the physics of time travel, because of the simple reason I haven't learned enough about the General relativity and about the spacetime to understand the theories completely. I try to understand the main idea, and mostly trust the scientists they don't lie to me about it.
Physics accepts and explains time travel. I agree that we shouldn't discuss about paradoxes, but I simply want to say that there's a limit to the human knowledge, which the paradoxes arise from. (There are even some paradoxes in our 'normal' universe, like those of a black hole.)
If many physicists can explain the time travel, I think that it is probably possible. If they claim that sooner or later we will have it, I believe them. Wouldn't you?
An interesting perspective about time travel: http://www.andersoninstitute.com...
Wikipedia (I recommend to view the page, it might explain a lot): https://en.wikipedia.org...
Use a wormhole: okay how much energy does that take to create or manipulate? How much time and money does it take to create a device to survive such a voyage.
Use an infinite cylinder: Okay how much does it cost and how much energy do we need to make an infinite cylinder?
Make a tardis: Okay what goes into creating such a machine?
All of these theoretically could time travel, and the math supports it but there are things other than math that are needed to actually travel through time. If those other things are not attainable then time travel, no matter what the math says, is impossible.
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