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According to Einstein's theories, time is a dimension similar to space. To travel into the past, you have to create a "closed timelike loop". That's essentially a wormhole where the entry and exit points are separated in time as well as space.
Until the wormhols is created there's nowhere to "go" to.
Ooooooh...yeah, that makes sense. Thanks, Kosmopolit. -
- CommentAuthorrough night
- CommentTimeMar 30th 2008
As far as i've seen, if fewer than 100% of scientists believe a new invention will destroy life as we know it, they're going to build it anyway.
And reynolds, I believe the 2009 scare is "all the bees will die, plants won't get pollinated, society will collapse and we'll eat each other." -
Thing looks scary on its own. -
Scary yet beautiful. Don't you wanna get in there and jump up and down and yell things? It's an awesome giant tunnel of doomy doom.
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Love the quote about 'strangelets':
<blockquote>"We see no evidence of this bizarre theory," he said. "Once in a while, we trot it out to scare the pants off people. But it's not serious."</blockquote> -
That picture is missing the Falcon and a couple of X-Wings flying down the middle.
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- CommentAuthorInsect King
- CommentTimeApr 4th 2008 edited
Rootfireember
Wouldn't by string theory or somesuch, a mini-tear pretty much instantly repair itself and therefore really do.. uhm... nothing?
Apparently closed gravity and/or time-like loop strings get threaded by quantum-scopic tears in timespace and the both stabilise each other. Of course this is all unproven and largely seen as airy-fairy made-up stuff by other physicists who slave and sweat with back-breaking labour.
The assumption is that Quantum Foam, the final underlying reality of spacetime, is choppy with fluctuations which, visually, is about as picturesque as the snow on an untuned television, is filled with tears as the static on the screen has unlit, black pixels. Since we're still here, another instaneous tear isn't going to matter much, is it?
Chris, who still hasn't learned his lesson and is explaining quantum stuff again. -
if i had to choose between the world being destroyed by famine and war as a result of peak oil , or being propelled through a singularity with 6 billion other people at the same time, i'd go with the singularity.
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CommentAuthorobliterati
- CommentTimeApr 18th 2008
I'm having a time out until I can learn some manners.If the world kills itself with a ten billion dollar goatse I will laugh <i>so</i> hard. -
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Spider Robinson wrote a book - can't remember which one - wherein the protagonist explains his belief that the only two kinds of people it's OK to kill are telepaths and time travelers. Because it is impossible for either type of person to be up to any good, whatsoever. (Of course, said protagonist subsequently encounters a time traveling telepath, who he is utterly unable to kill for two reasons that should be obvious.)
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God, this thread is awesome.
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I have to say, each time I read "tear in spacetime," I somehow mentally jump to the idea of scientists giving the Universe an anal fistula.
You can tell I did Physics, can't you? -
- CommentAuthorchinchalinchin
- CommentTimeJun 7th 2008
I find it doubtful the particle accelerator she's talking about will be able to tear the fabric of space-time irrevocably. It should be able, at least theoretically, create mini-blackholes, but since we aren't dealing with mass the size of a star, these mini-blackholes will ignite almost immediately into a brilliant burst of Hawking radiation and disappear.
The most convincing time travel conjecture I've seen put forth has been from this guy: http://www.youtube.com/watch?v=vTnf7aIiAyk
Mainly because he's not talking about ripping holes in space-time or using negative mass to create wormholes or whatever crackpot theory Hollywood uses in their movies today, if any. He's talking about something that is very down-to-earth and very possible, at least from modern physics' point of view. Granted, right now it doesn't seem to have a lot of practical use, the very fact we can create a loop in time should be enough to suggest some sort of time travel is possible, but probably not on the scale we are thinking. I imagine if time travel is ever established, it won't be anything more than information being sent across light waves that are caught in some sort of loop. We'll have contact with the future one day, perhaps, yes. But the only way we are ever going to physically get there is to wait. -
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CommentAuthorraymondconlon
- CommentTimeJun 7th 2008
So, 'Atlas' is some sort of death machine, yes? -
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Dude, I'm watching Back to the Future right now. That just blew my mind.
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i wish i was rad enough to have aform of radiation named after me.
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CommentAuthorBrendan McGinley
- CommentTimeOct 31st 2008
The best part of that Mallett video? Scientists actually pouring steaming chemicals from one flask to another. That's what made it glorious mad science. -
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- CommentAuthorRichardFannon
- CommentTimeNov 1st 2008
@Linsterg: Sounds like a Callahan's story, but it's not one I'm familiar with
/nips onto Amazon and adds a pile of Spider Robinson re-issues to his Wish List. Amazon tells him that the Modesty Blaise strips have just been recollected and re-issued so he adds a few of those