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Scientists zero in on why time flows in one direction
eurekalert/University of Chicago ^ | 26-Oct-2004 | Steve Koppes

Posted on 10/26/2004 7:36:36 PM PDT by ckilmer

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To: All
"for the most part the fundamental laws of physics don't distinguish between past and future. They're time-symmetric," Carroll said.

But there's a problem with that scenario: a "skeleton in the closet," Carroll said. To begin inflation, the universe would have encompassed a microscopically tiny patch in an extremely unlikely configuration, not what scientists would expect from a randomly chosen initial condition.

"The conditions necessary for inflation are not that easy to start," Carroll said. "There's an argument that it's easier just to have our universe appear from a random fluctuation than to have inflation begin from a random fluctuation."

Carroll and Chen's scenario of infinite entropy is inspired by the finding in 1998 that the universe will expand forever because of a mysterious force called "dark energy." Under these conditions, the natural configuration of the universe is one that is almost empty. "In our current universe, the entropy is growing and the universe is expanding and becoming emptier," Carroll said.

But even empty space has faint traces of energy that fluctuate on the subatomic scale. As suggested previously by Jaume Garriga of Universitat Autonoma de Barcelona and Alexander Vilenkin of Tufts University, these flucuations can generate their own big bangs in tiny areas of the universe, widely separated in time and space. Carroll and Chen extend this idea in dramatic fashion, suggesting that inflation could start "in reverse" in the distant past of our universe, so that time could appear to run backwards (from our perspective) to observers far in our past.

I'm supposed to take any of this seriously?

Time runs both forwards and backwards at the same time, while it also doesn't run at all and stands still. The Universe was created at the time of the Big Bang but is continuously experiencing little "Big Bangs" at the same time, which is flowing both forwards and backwards at the same "time" while also standing still.

"Dark energy" is all around us but undetectible except for theory. Since our theories can't be wrong it must exist and we just have to find it. That will explain why the Universe is expanding in a fashion that we can't explain and how time runs both forwards and backwards at the same time.

I'm going back to be now, my dreams have more coherence than this.

221 posted on 10/27/2004 5:09:31 AM PDT by LogicWings
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To: ApesForEvolution
Did you require thought before typing backwards sdrawkcab?

Not when I wrote the reply, since I had been searching on that darned word in search engines looking for that web page. The first time, however. . .

Also, while you're here: are you related to A.Pole?

Not that I know of. But hey, if you ever want to know what "The People" are thinking, just ask me, T.P.Pole. I got so sick last election cycle of the media saying "The American People" want this and "The People" want that, that I decided to prove them wrong.

222 posted on 10/27/2004 5:15:02 AM PDT by T. P. Pole
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To: ckilmer

Time is the ordering of cause and effect. The effect can't precede the cause.


223 posted on 10/27/2004 5:19:58 AM PDT by Aquinasfan (Isaiah 22:22, Rev 3:7, Mat 16:19)
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To: ckilmer
I'm not sure we know what is forward or reverse any more than our friends in Australia thing South is up. I think you can make a case that time is going backwards right now. How else to you explain democrats getting dumber by the day and Muslims thinking their life style is proper?
224 posted on 10/27/2004 5:24:55 AM PDT by Wurlitzer (I have the biggest organ in my town {;o))
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To: TheBigB

Just remember...In comedy timing is everything.


225 posted on 10/27/2004 5:41:23 AM PDT by xp38
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To: ckilmer
Next up -

A $2 billion dollar study on why water is wet!

226 posted on 10/27/2004 5:43:40 AM PDT by MamaTexan (I am NOT a 'legal entity'!)
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To: Barset

The article isn't clear but I think they want to say that local entropy is increasing (this is measurable) but in an infinite universe, the total would be infinite. But, maybe the authors meant something else entirely.


227 posted on 10/27/2004 6:06:34 AM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
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To: Aquinasfan
Time is the ordering of cause and effect. The effect can't precede the cause.

Are you sure it isn't the other way around. If event A always preceeds event B, then we call A the cause, and B the effect. The concept of causa efficiens works this way. But if A and B always occur together, one could choose to call the earlier the cause or just call the cause the earlier (were there some non-temporal method of determining cause.)

228 posted on 10/27/2004 6:16:16 AM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
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To: Camachee; ckilmer
moon shadows
mark time
nonlinearly
229 posted on 10/27/2004 6:24:29 AM PDT by Neuromancer
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To: T. P. Pole

LOL

That's good!


230 posted on 10/27/2004 6:57:02 AM PDT by ApesForEvolution (You will NEVER convince me that Muhammadanism isn't a veil for MASS MURDERS. Save your time...)
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To: OlBlue

OlBlue, you were reading my mind...


231 posted on 10/27/2004 7:03:40 AM PDT by ApesForEvolution (You will NEVER convince me that Muhammadanism isn't a veil for MASS MURDERS. Save your time...)
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To: ckilmer

Better check with AlGore. He may have been involved with the Big Bang ;)


232 posted on 10/27/2004 7:19:34 AM PDT by JZelle
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To: Doctor Stochastic
The article isn't clear but I think they want to say that local entropy is increasing (this is measurable) but in an infinite universe, the total would be infinite. But, maybe the authors meant something else entirely.

I think that's about it, at least as I read it. Measurable local increase in entropy. There's no limit, in principle, to how far the BB might continue to expand, thus in a universe of ever-increasing volume, entropy would approach the infinite.

233 posted on 10/27/2004 7:50:48 AM PDT by PatrickHenry (Hic amor, haec patria est.)
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To: ckilmer

God did it.


234 posted on 10/27/2004 8:05:20 AM PDT by JimRed (VOTE LIKE YOUR LIFE DEPENDED UPON IT...because it may!)
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To: ckilmer

time is simply the movent of an object in space. if nothing moved, there would be no time. And, since and object cannot move in two directions at the same time, time only goes in one direction. forward.


235 posted on 10/27/2004 8:09:41 AM PDT by bjmorris
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To: ckilmer

236 posted on 10/27/2004 8:14:24 AM PDT by Revolting cat! ("In the end, nothing explains anything!")
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To: bjmorris
time is simply the movent of an object in space.

The motion you refer to is just a sequence of events. "Time" is the duration of a sequence of events, as measured against another sequence used as a standard -- usually something astronomical, such as the rotation of the earth.

237 posted on 10/27/2004 8:32:58 AM PDT by PatrickHenry (Hic amor, haec patria est.)
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To: ApesForEvolution

I wish!!!! LOL


238 posted on 10/27/2004 9:12:41 AM PDT by AggieCPA (Howdy, Ags!)
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To: ckilmer
In a universe of finite entropy, some scientists have proposed that a random fluctuation could trigger inflation. This, however, would require the molecules of the universe to fluctuate from a high-entropy state into one of low entropy-a statistical longshot.

Molecules?

239 posted on 10/27/2004 9:13:27 AM PDT by AndrewC (I also think that Carthage should be destroyed. - Cato)
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To: ckilmer
..why time flows in one direction?

Because otherwise, poop would fly up our butt.

(For more details read, Phillip K. Dick's "Counterclock World" (one of his few stories not made into a movie yet))

240 posted on 10/27/2004 9:16:15 AM PDT by TC Rider (The United States Constitution © 1791. All Rights Reserved.)
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