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Time Travel and perhaps the end of physics
http://www.nytimes.com/2009/10/13/science/space/13lhc.html?ref=science
Had to share this article with everyone. As someone who has been waiting not-so patiently for three or four years to see reports from the first collisions of the Large Hadron Collider this is the best theory the LHC has produced thus far. Basically there is a small (very small) group of physicists who somewhat jokingly think that the malfunctions of the LHC-which have delayed starting up the experiments for a couple years now-were caused by a self-enforcing and time traveling universe which does not want the scientists to find whatever there is to find, supposedly the mysterious Higgs Boson which gives particles their mass. Of course there is no proof for this and the theory is probably born out of the frustration of waiting for such an anticipated series of experiments. Also, why wouldn't the universe just go back further and prevent the discovery of the atom? I doubt the universe works with time in mind. It might even go further back and stop humans from evolving.

But what this theory and the article do I think bring up which I think is worthy of discussing especially because I love thinking about it, is time travel. It is fairly well established in the philosophical and physics realm that time travel into the future is theoretically possible. But they say the same thing about communism. Why think about it when it would require millions of times more energy than the earth can produce even if it were one giant oil refining plant? And under this crazy theory that the universe itself is capable of breaking its own rules then there is even less reason to think about it because if these things are at work, well whatever, we don't know it. It doesn't seem fair though, that the universe, as far as we know a non-sentient entity, gets to travel through time and play around with its own future.

I wonder what you all think. Is time travel something worth scientific or philosophical exploration? The article says it is a somewhat respected area of study. The theoretical math has proved it with numbers as it relates to going to the future. As of yet it doesn't seem probable it could work backwards, yet though. And isn't this how all science works? It starts with figuring out the numbers and then it moves to proof. That's why there are two distinct areas of physics, the theoretical and the experimental. Which is harder? Well, considering the LHC cost 9 billion dollars and 15 years to make it seems like more of an effort to be an experimental physicist these days. Long gone are the experiments of rolling a marble down a ramp. Now we are launching single electrons at each other in a speed of light death match. Seems like the math guys with their chalk have it easy.

At this point though, I want it to end. In the 19th century the natural sciences won the day, that is biology and chemistry. They got all the funds and the attention. Almost every day there was something new discovered and of course we know the century as the origin of Darwin's theory of evolution. The 20th century however was all about physics. It started with the discovery of the atom and the funds haven't stopped especially not once we figured out we could split the atom and create the worst killing machines the world has ever known. But I think the time should be up. At this point where can physics go? It can prove string theory, sure, but where does that take us? It only gives us peace of mind, it doesn't give back to any of our lives. Imagine if 9 Billion dollars went into environmental studies. I think the time for any single science has past. Now we need to work on interdisciplinary exchange. We need to combine physics with chemistry and biology and make the world a better and cleaner place. Who cares if time travel is possible if we can't do it, likewise who cares if there are an infinite number of other dimensions or universes out there, we only have our one, why not make it better with every tool we have?
I have limited knowledge of physics, so I'm just going to address your last paragraph.

I'm a bit confused about what you're arguing here. You view science through the lens of history. The history of science is one of 'eras', and so you say physics is the science of our era. Thus since many physics problems are unsolvable we should move on to science with direct utility to mankind (you mention time travel, ironically one of the more unsolvable 'problems' of physics).

I disagree with this thinking. Science is not simply dominated by trends. Disciplines can coexist without an authoritarian decision on which branch's time has come. Viewing science as one of dominating eras and dominating disciplines is a decision for historians, not for policy makers (or research granters). In addition to physics, it seems like you have a problem with basic research i.e. research that does not give immediate utility to society. Whether in one year or in fifty years basic research, more often than not, does benefit society.
1) i'd like to say that despite it being theoretically possible, and mind that i'm no expert on physics, i don't think that humans ever will be able to harness time as a form a physical travel. Why do i say this? Well because, and this is a long shot here, if humans ever ended up figuring out how to time travel, then why don't we see people from the future walking around laughing and pointing at our ancient (to them) society? And you can't argue that people from the future are smart enough not to get caught time traveling, because there will always be at least some stupid people. And  how many " I was visited by a man from the future" tales have you heard? I would say that there must be at least a hundred "i was abducted by aliens" tales for every "i was visited by a man from the future" tales. So if we are going to believe in a far fetched idea, then rationally speaking, we should go with the alien thing.

and 2) I completely agree that the various fields of sciences should be combined for the improvement of the Earth and our society. I can't think of one scientific field of study that could be fully functional or effective without help from another, and more people probably need to realize this.

In response to Althea Leigh Hicks
Hi Althea,
The way they solve your well argued objection number 1 is that they say you can only time-travel to the future and not the past.

While right and left are symmetric, and if one can travel right one can travel left, and similarly up and down (Heraclitus says something like: "The road leading up is also the one leading down.")  there are some axes, like time, which can be said to be asymmetric. That is, you can't move forwards and backwards the same way.
 
We are used that if we look at the mirror and move backwards, so does the person in the mirror. One of the inventions of modern physics was to see in certain places an asymmetry. Some particls, when looking in the mirror and moving backwards, their reflection actually moves forward. Yes, it sounds strange and there are people here who know these things much better than me, but I think that's how they describe. It's a brilliant idea if you think of it.
My guess would be that there will be some element of this asymmetry in only allowing time-travel forwards.
But I should add that I didn't read the article, only Mark's description of it.
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Latest Post: January 9, 2012 at 5:33 PM
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