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	<title>Comments on: Timelessness</title>
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	<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/</link>
	<description>Random samplings from a universe of ideas.</description>
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		<title>By: Victorb</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-80748</link>
		<dc:creator>Victorb</dc:creator>
		<pubDate>Tue, 30 Jun 2009 03:48:06 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-80748</guid>
		<description>Add me to the list of people who think time cannot truly be discounted, no matter which equations it can drop out of. It&#039;s still there in GR even if you&#039;ve transferred all that energy into x, y, and z. And of course, it&#039;s still there as the underlying basis of perception. One cannot perceive anything at all without time, even the concept of timelessness.</description>
		<content:encoded><![CDATA[<p>Add me to the list of people who think time cannot truly be discounted, no matter which equations it can drop out of. It&#8217;s still there in GR even if you&#8217;ve transferred all that energy into x, y, and z. And of course, it&#8217;s still there as the underlying basis of perception. One cannot perceive anything at all without time, even the concept of timelessness.</p>
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		<title>By: Zoltan J Kiss</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-80460</link>
		<dc:creator>Zoltan J Kiss</dc:creator>
		<pubDate>Sat, 27 Jun 2009 08:52:06 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-80460</guid>
		<description>Dear Sean and All

The &quot;time case&quot; is simple: 
No time would mean no event and no event means no time.  Timelessness as such would mean no matter as well. The universal event establishing &quot;the time&quot; is the transformation of matter from its mass status into its energy status and the re-transformation of the energy into mass again. This process-re-process is permanent and is in balance with certain intensity differences between the two. 

The three basic parameters are: mass, energy, time.

The realised by the institutional science conflict between the General Theory and the quantum theory stems from Einstein&#039;s mistake in the time formula (the reciprocal character is missing). Contrary to the &quot;official&quot; Special Theory, the motion speeds up the time flow. With this input, the General Theory is different and today&#039;s quantum theory is also different. And there would be no conflict to speak about. 

The institutional science, with all my respect to them personally, does not listen to this as the science would only be the privilege of those within it. 

There is no space in a blog to prove my points above, but my works &quot;The Energy Balance of Relativity&quot; (trafford.com/06-3261) and the &quot;Quantum Energy and Mass Balance&quot; (trafford.com/08-1547) give the physical and mathematical proof.

All the best to you all
Z</description>
		<content:encoded><![CDATA[<p>Dear Sean and All</p>
<p>The &#8220;time case&#8221; is simple:<br />
No time would mean no event and no event means no time.  Timelessness as such would mean no matter as well. The universal event establishing &#8220;the time&#8221; is the transformation of matter from its mass status into its energy status and the re-transformation of the energy into mass again. This process-re-process is permanent and is in balance with certain intensity differences between the two. </p>
<p>The three basic parameters are: mass, energy, time.</p>
<p>The realised by the institutional science conflict between the General Theory and the quantum theory stems from Einstein&#8217;s mistake in the time formula (the reciprocal character is missing). Contrary to the &#8220;official&#8221; Special Theory, the motion speeds up the time flow. With this input, the General Theory is different and today&#8217;s quantum theory is also different. And there would be no conflict to speak about. </p>
<p>The institutional science, with all my respect to them personally, does not listen to this as the science would only be the privilege of those within it. </p>
<p>There is no space in a blog to prove my points above, but my works &#8220;The Energy Balance of Relativity&#8221; (trafford.com/06-3261) and the &#8220;Quantum Energy and Mass Balance&#8221; (trafford.com/08-1547) give the physical and mathematical proof.</p>
<p>All the best to you all<br />
Z</p>
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		<title>By: Blue Fire</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-80205</link>
		<dc:creator>Blue Fire</dc:creator>
		<pubDate>Thu, 25 Jun 2009 03:21:28 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-80205</guid>
		<description>Timelessness, to my understanding, simply means that time, in and of itself, does not exist as a tangible or otherwise inherent property of the universe. Does time exist inside a movie? No. There is only change from one frame to another. So our universe &quot;proceeds&quot; from one state to the next with a change from one state to the next. A single &quot;frame&quot; would be what we may want to call the present. The &quot;next&quot; frame, our future. The &quot;previous&quot; frame, our past. But according to theory, those frames, all of them, exist. We humans only seem to experience time because we remember the &quot;past&quot; and not the &quot;future&quot;. But that is only a consequence of a change in the state of our brains from a simpler state to another state in which we remember the previous state or frame. 

And a direct extension of relativity shows that person A&#039;s future can be person B&#039;s past due to differences of velocity, direction of motion, and spatial separation. If this is true, then all of spacetime must exist: all of space, all of &quot;time&quot;. Spacetime would be like a huge loaf of bread. The slice of spacetime that I call &quot;now&quot;, could intersect with someone else&#039;s &quot;past.&quot; This depends on how the loaf is sliced by each person, and that is determined by each person to be slightly different according to the comparative warping of spacetime due to relativistic effects.

So, you can see that this does indeed have meaning-of-life type implications! It would mean that determinism might rule after all. Except in the case of the uncertainty principle, where the details of a slice of spacetime here might depend on the actual result of a wave function collapse in a different frame. But then, all slices (or frames), are defined differently for each observer - yet the whole loaf of bread, or the whole of spacetime, still exists independently of how it may be sliced.

That&#039;s my story, and I&#039;m sticking to it! :-)</description>
		<content:encoded><![CDATA[<p>Timelessness, to my understanding, simply means that time, in and of itself, does not exist as a tangible or otherwise inherent property of the universe. Does time exist inside a movie? No. There is only change from one frame to another. So our universe &#8220;proceeds&#8221; from one state to the next with a change from one state to the next. A single &#8220;frame&#8221; would be what we may want to call the present. The &#8220;next&#8221; frame, our future. The &#8220;previous&#8221; frame, our past. But according to theory, those frames, all of them, exist. We humans only seem to experience time because we remember the &#8220;past&#8221; and not the &#8220;future&#8221;. But that is only a consequence of a change in the state of our brains from a simpler state to another state in which we remember the previous state or frame. </p>
<p>And a direct extension of relativity shows that person A&#8217;s future can be person B&#8217;s past due to differences of velocity, direction of motion, and spatial separation. If this is true, then all of spacetime must exist: all of space, all of &#8220;time&#8221;. Spacetime would be like a huge loaf of bread. The slice of spacetime that I call &#8220;now&#8221;, could intersect with someone else&#8217;s &#8220;past.&#8221; This depends on how the loaf is sliced by each person, and that is determined by each person to be slightly different according to the comparative warping of spacetime due to relativistic effects.</p>
<p>So, you can see that this does indeed have meaning-of-life type implications! It would mean that determinism might rule after all. Except in the case of the uncertainty principle, where the details of a slice of spacetime here might depend on the actual result of a wave function collapse in a different frame. But then, all slices (or frames), are defined differently for each observer &#8211; yet the whole loaf of bread, or the whole of spacetime, still exists independently of how it may be sliced.</p>
<p>That&#8217;s my story, and I&#8217;m sticking to it! <img src='http://blogs.discovermagazine.com/cosmicvariance/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' /> </p>
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		<title>By: Steve Esser</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79839</link>
		<dc:creator>Steve Esser</dc:creator>
		<pubDate>Mon, 22 Jun 2009 16:06:19 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79839</guid>
		<description>Hopefully, the debate will indeed be decided by which sort of picture helps explain things.  From my (limited) perspective as a layperson interested in this stuff:  it seems more likely that a program which starts with time/causality will be able to derive space and matter as emergent phenomena (as in Markopoulou&#039;s work, CDT, etc.); as opposed to the timeless theory successfully explaining the role time plays both in our experience as well as in our best physical theories to-date.  I guess we&#039;ll see.</description>
		<content:encoded><![CDATA[<p>Hopefully, the debate will indeed be decided by which sort of picture helps explain things.  From my (limited) perspective as a layperson interested in this stuff:  it seems more likely that a program which starts with time/causality will be able to derive space and matter as emergent phenomena (as in Markopoulou&#8217;s work, CDT, etc.); as opposed to the timeless theory successfully explaining the role time plays both in our experience as well as in our best physical theories to-date.  I guess we&#8217;ll see.</p>
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		<title>By: Ahmed</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79803</link>
		<dc:creator>Ahmed</dc:creator>
		<pubDate>Mon, 22 Jun 2009 06:21:38 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79803</guid>
		<description>Anyone can have valid mathematical claims, but nobody (including Barbour) can explain things like the second law of thermodynamics, in our closed universe, without the arrow of time. He can&#039;t explain basic quantum phenomena either without the arrow of time, even if the more complicated formulatiions work out. Mathematics is only in your head. Energy, entropy and more importantly *information*, are very real. 

All the physics that completely does away with time faces these problems. It is not a lack of creativity on your part to dismiss the way the world works. You are a scientist, an observer. The observable principles of physics (nott the models, the observations) are more worthy of belief than the trickery of mathematics. We can write the math any way you want, we can even reinvent it, come up with entirely different ways of doing things.. that activity is not really interesting in itself, it is just a consequence of how we think. Logic was supposed to be interesting, because it is inherent in the universe, but mathematical systems are not. Your observations and reflections on the world are far more interesting, especially when tthey coincide with some sort of representatiion that we *happen* to comprehend and write down in symbols.  

For e.g, we know for sure that things seem to &#039;change&#039;, because things are distinguishable from each other. Why though? Why are things different? Your essay laid it down prretty nicely, and it is even understood since antiquity:  things are different because they can be, dancing along the moving arrow of time. And &#039;Different&#039; is a term that implies information portrayed by the world, and information is mysteriously linked to tangible things like energy (see Landaur et al).  So, although Barbour can probably *describe* his submission of the paper in a way that answers your question,  I&#039;ll bet you he woulddn&#039;t want to stick his hand in a burning flame. If information is physical, the act off classic computation itself defies a truly timeless universe in a tangible, observable manner. 

They just can&#039;t see it.</description>
		<content:encoded><![CDATA[<p>Anyone can have valid mathematical claims, but nobody (including Barbour) can explain things like the second law of thermodynamics, in our closed universe, without the arrow of time. He can&#8217;t explain basic quantum phenomena either without the arrow of time, even if the more complicated formulatiions work out. Mathematics is only in your head. Energy, entropy and more importantly *information*, are very real. </p>
<p>All the physics that completely does away with time faces these problems. It is not a lack of creativity on your part to dismiss the way the world works. You are a scientist, an observer. The observable principles of physics (nott the models, the observations) are more worthy of belief than the trickery of mathematics. We can write the math any way you want, we can even reinvent it, come up with entirely different ways of doing things.. that activity is not really interesting in itself, it is just a consequence of how we think. Logic was supposed to be interesting, because it is inherent in the universe, but mathematical systems are not. Your observations and reflections on the world are far more interesting, especially when tthey coincide with some sort of representatiion that we *happen* to comprehend and write down in symbols.  </p>
<p>For e.g, we know for sure that things seem to &#8216;change&#8217;, because things are distinguishable from each other. Why though? Why are things different? Your essay laid it down prretty nicely, and it is even understood since antiquity:  things are different because they can be, dancing along the moving arrow of time. And &#8216;Different&#8217; is a term that implies information portrayed by the world, and information is mysteriously linked to tangible things like energy (see Landaur et al).  So, although Barbour can probably *describe* his submission of the paper in a way that answers your question,  I&#8217;ll bet you he woulddn&#8217;t want to stick his hand in a burning flame. If information is physical, the act off classic computation itself defies a truly timeless universe in a tangible, observable manner. </p>
<p>They just can&#8217;t see it.</p>
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		<title>By: Jonathan Vos Post</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79764</link>
		<dc:creator>Jonathan Vos Post</dc:creator>
		<pubDate>Sun, 21 Jun 2009 18:11:43 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79764</guid>
		<description>My teacher&#039;s teacher to the 5th power (through such links as G. E. Moore, Bertrand Russell, Norbert Wiener) John McTaggart Ellis McTaggart [1866-1925] was a Fellow of Trinity  College, Lecturer in Moral Sciences, and a Nonreductionist.  He was the  author of &quot;Studies in Hegelian Cosmology. The Philosophy of Hegel&quot;  [Dissertation, 1898; 1901; Garland, 1984]. This work explored application  of a priori conclusions derived from the investigation of pure thought to  empirically-known subject matter; human immortality; the absolute; the  supreme good and the moral criticism; punishment; sin; and the conception  of society as an organism.  McTaggart was controversial for claiming that  time was unreal: &quot;The Nature of Existence&quot; [Cambridge University Press,  1921]; &quot;The Unreality of Time&quot; [Mind, vol. XVII].</description>
		<content:encoded><![CDATA[<p>My teacher&#8217;s teacher to the 5th power (through such links as G. E. Moore, Bertrand Russell, Norbert Wiener) John McTaggart Ellis McTaggart [1866-1925] was a Fellow of Trinity  College, Lecturer in Moral Sciences, and a Nonreductionist.  He was the  author of &#8220;Studies in Hegelian Cosmology. The Philosophy of Hegel&#8221;  [Dissertation, 1898; 1901; Garland, 1984]. This work explored application  of a priori conclusions derived from the investigation of pure thought to  empirically-known subject matter; human immortality; the absolute; the  supreme good and the moral criticism; punishment; sin; and the conception  of society as an organism.  McTaggart was controversial for claiming that  time was unreal: &#8220;The Nature of Existence&#8221; [Cambridge University Press,  1921]; &#8220;The Unreality of Time&#8221; [Mind, vol. XVII].</p>
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		<title>By: &#124;John R Ramsden</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79733</link>
		<dc:creator>&#124;John R Ramsden</dc:creator>
		<pubDate>Sun, 21 Jun 2009 09:48:23 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79733</guid>
		<description>Considering the overall evolution of the Universe, from the early inflation phase when presumably lots of events were occurring in short intervals, to the supposed distant future of rapidly expanding space containing nothing but a few black holes, one might almost think that nature itself is working to eliminate time, defined in the practical sense of a causal ordering of events or, what amounts to the same, weaken its effect by spreading it out.

At the risk of sounding homely, this sort of reminds me of something my aunt once told me. &quot;The older you get, the faster the years slip by&quot;. How right she was, and perhaps as I say the same is  ultimately true of the Universe.</description>
		<content:encoded><![CDATA[<p>Considering the overall evolution of the Universe, from the early inflation phase when presumably lots of events were occurring in short intervals, to the supposed distant future of rapidly expanding space containing nothing but a few black holes, one might almost think that nature itself is working to eliminate time, defined in the practical sense of a causal ordering of events or, what amounts to the same, weaken its effect by spreading it out.</p>
<p>At the risk of sounding homely, this sort of reminds me of something my aunt once told me. &#8220;The older you get, the faster the years slip by&#8221;. How right she was, and perhaps as I say the same is  ultimately true of the Universe.</p>
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		<title>By: asdfhgh</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79661</link>
		<dc:creator>asdfhgh</dc:creator>
		<pubDate>Sat, 20 Jun 2009 10:55:49 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79661</guid>
		<description>Is there any particular reason why my last comment was deleted? I was simply voicing an opinion; I also happened to do so in a much less derisive way than many of the flat out ignorant comments being posted by a majority of people (the majority of which, I&#039;m willing to bet, have not read Dr Barbour&#039;s papers), which have not been deleted. Even you, Sean, have admitted that you haven&#039;t read the papers in detail. Some of these people (him and he collaborators) have been working exclusively in the field (of gravitation) for longer than a lot of the commenters have been alive - in short, their opinions are worth listening to*.

My point is this: It&#039;s not about what we can &#039;gain&#039; from thinking of the world of timeless. Time is either an emergent property or it is not. I for one believe that understanding the true nature of time for its own sake is more than worthwhile, whether it exists or not - whether or not we stand to gain something more from doing so should not be paramount. I find it saddening that just because timelessness is counter-intuitive/against the opinions held by some (although, thankfully, not all) of the commenters, they see fit to label Dr Barbour as a crank, with little other justification.

*Before anyone tries to misconstrue that: By &#039;listen to&#039;, I mean exactly that. Just because someone has been working in a field for as long as Dr Barbour has does not mean that his idea could simply be flat out wrong. Regardless of that, he is an expert in classical general relativity and not some readily dismissed crackpot.</description>
		<content:encoded><![CDATA[<p>Is there any particular reason why my last comment was deleted? I was simply voicing an opinion; I also happened to do so in a much less derisive way than many of the flat out ignorant comments being posted by a majority of people (the majority of which, I&#8217;m willing to bet, have not read Dr Barbour&#8217;s papers), which have not been deleted. Even you, Sean, have admitted that you haven&#8217;t read the papers in detail. Some of these people (him and he collaborators) have been working exclusively in the field (of gravitation) for longer than a lot of the commenters have been alive &#8211; in short, their opinions are worth listening to*.</p>
<p>My point is this: It&#8217;s not about what we can &#8216;gain&#8217; from thinking of the world of timeless. Time is either an emergent property or it is not. I for one believe that understanding the true nature of time for its own sake is more than worthwhile, whether it exists or not &#8211; whether or not we stand to gain something more from doing so should not be paramount. I find it saddening that just because timelessness is counter-intuitive/against the opinions held by some (although, thankfully, not all) of the commenters, they see fit to label Dr Barbour as a crank, with little other justification.</p>
<p>*Before anyone tries to misconstrue that: By &#8216;listen to&#8217;, I mean exactly that. Just because someone has been working in a field for as long as Dr Barbour has does not mean that his idea could simply be flat out wrong. Regardless of that, he is an expert in classical general relativity and not some readily dismissed crackpot.</p>
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		<title>By: SFJP</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79633</link>
		<dc:creator>SFJP</dc:creator>
		<pubDate>Sat, 20 Jun 2009 03:19:33 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79633</guid>
		<description>I&#039;d like to answer to both Sean and Matt. I see one and only one interest and reason for considering timelessness: space is isotropic, time is not. While many people think that the irreversibility of the arrow of time is well understood, I believe it is not. To be brief and go directly to the meat of the issue, I&#039;d say that the discrepancy between time reversibility at the microscopic level and time irreversibility at the macroscopic level has never been completely solved. At the end of all reflection on this issue we always get to the same paradox: the law of large numbers, which most of the people think obvious and even mathematically proved, which is not true in a physical sense. If time flow is an illusion, the way we connect instants to form an history that will appear irreversible is then a matter related to the building of memory, and not an intrinsic property of a physical time.  There is there the possibility may be to escape the paradox of macroscopic time irreversibility, not by following Babour but rather some alternate approach à la Rovelli about thermal time and/or the role of entropy growth in the constitution of memory. This is a very confused issue, but it is the notion of a true time, being both reversible and irreversible,  that remains the most confusing.</description>
		<content:encoded><![CDATA[<p>I&#8217;d like to answer to both Sean and Matt. I see one and only one interest and reason for considering timelessness: space is isotropic, time is not. While many people think that the irreversibility of the arrow of time is well understood, I believe it is not. To be brief and go directly to the meat of the issue, I&#8217;d say that the discrepancy between time reversibility at the microscopic level and time irreversibility at the macroscopic level has never been completely solved. At the end of all reflection on this issue we always get to the same paradox: the law of large numbers, which most of the people think obvious and even mathematically proved, which is not true in a physical sense. If time flow is an illusion, the way we connect instants to form an history that will appear irreversible is then a matter related to the building of memory, and not an intrinsic property of a physical time.  There is there the possibility may be to escape the paradox of macroscopic time irreversibility, not by following Babour but rather some alternate approach à la Rovelli about thermal time and/or the role of entropy growth in the constitution of memory. This is a very confused issue, but it is the notion of a true time, being both reversible and irreversible,  that remains the most confusing.</p>
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		<title>By: RD</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79569</link>
		<dc:creator>RD</dc:creator>
		<pubDate>Fri, 19 Jun 2009 09:21:37 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79569</guid>
		<description>Of course they don&#039;t change their mind, there is no time for that. The moment they changed their mind they would have created an new instant of time, thus discrediting their hypothesis.</description>
		<content:encoded><![CDATA[<p>Of course they don&#8217;t change their mind, there is no time for that. The moment they changed their mind they would have created an new instant of time, thus discrediting their hypothesis.</p>
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		<title>By: Sam Gralla</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79544</link>
		<dc:creator>Sam Gralla</dc:creator>
		<pubDate>Fri, 19 Jun 2009 03:04:08 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79544</guid>
		<description>amen.</description>
		<content:encoded><![CDATA[<p>amen.</p>
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		<title>By: Chris W.</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79543</link>
		<dc:creator>Chris W.</dc:creator>
		<pubDate>Fri, 19 Jun 2009 02:38:06 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79543</guid>
		<description>Echoing comment 16 (from &lt;a href=&quot;http://scipp.ucsc.edu/~aguirre/&quot; rel=&quot;nofollow&quot;&gt;Anthony Aguirre&lt;/a&gt;) I&#039;d say that Barbour&#039;s position is deeply bound up with what is occasionally referred to as the &quot;many-fingered nature of time&quot; in general relativity. In most of our experience, and for that matter in most applications of physics, this hardly comes into play. We can get away with assuming that there is a single, absolute &quot;surface of simultaneity&quot; most of the time [ :) ] without running into serious difficulties.

By the way, when Sean says &quot;Protons are made of quarks, but you don’t hear particle physicists going around claiming that protons don’t exist.&quot;, he is touching on a profound epistemological issue in the layering of scientific explanations. When one uses an explanation to deny the existence of what one originally set out to explain, one is playing a very dangerous and ultimately self-defeating game. This tends to happen when one tries to turn the explanation into an all-embracing metaphysical worldview.</description>
		<content:encoded><![CDATA[<p>Echoing comment 16 (from <a href="http://scipp.ucsc.edu/~aguirre/" rel="nofollow">Anthony Aguirre</a>) I&#8217;d say that Barbour&#8217;s position is deeply bound up with what is occasionally referred to as the &#8220;many-fingered nature of time&#8221; in general relativity. In most of our experience, and for that matter in most applications of physics, this hardly comes into play. We can get away with assuming that there is a single, absolute &#8220;surface of simultaneity&#8221; most of the time [ <img src='http://blogs.discovermagazine.com/cosmicvariance/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  ] without running into serious difficulties.</p>
<p>By the way, when Sean says &#8220;Protons are made of quarks, but you don’t hear particle physicists going around claiming that protons don’t exist.&#8221;, he is touching on a profound epistemological issue in the layering of scientific explanations. When one uses an explanation to deny the existence of what one originally set out to explain, one is playing a very dangerous and ultimately self-defeating game. This tends to happen when one tries to turn the explanation into an all-embracing metaphysical worldview.</p>
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		<title>By: Count Iblis</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79531</link>
		<dc:creator>Count Iblis</dc:creator>
		<pubDate>Fri, 19 Jun 2009 00:01:05 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79531</guid>
		<description>Quasar, see here:

http://en.wikipedia.org/wiki/Tachyonic_Antitelephone</description>
		<content:encoded><![CDATA[<p>Quasar, see here:</p>
<p><a href="http://en.wikipedia.org/wiki/Tachyonic_Antitelephone" rel="nofollow">http://en.wikipedia.org/wiki/Tachyonic_Antitelephone</a></p>
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		<title>By: QUASAR</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79530</link>
		<dc:creator>QUASAR</dc:creator>
		<pubDate>Thu, 18 Jun 2009 23:53:17 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79530</guid>
		<description>@ Qubit and Rob Knop

What about tachyons?</description>
		<content:encoded><![CDATA[<p>@ Qubit and Rob Knop</p>
<p>What about tachyons?</p>
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		<title>By: Elliot Tarabour</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79503</link>
		<dc:creator>Elliot Tarabour</dc:creator>
		<pubDate>Thu, 18 Jun 2009 20:25:53 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79503</guid>
		<description>As someone pointed out elsewhere  &quot;Time is there to keep everything from happening at all at once&quot;

I don&#039;t see how you can eliminate time and retain causality in any meaningful way.  I am not a professional scientist but I am sort of attached to the notion of causality as a fundamental feature of reality. 

e.</description>
		<content:encoded><![CDATA[<p>As someone pointed out elsewhere  &#8220;Time is there to keep everything from happening at all at once&#8221;</p>
<p>I don&#8217;t see how you can eliminate time and retain causality in any meaningful way.  I am not a professional scientist but I am sort of attached to the notion of causality as a fundamental feature of reality. </p>
<p>e.</p>
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		<title>By: Steve</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79498</link>
		<dc:creator>Steve</dc:creator>
		<pubDate>Thu, 18 Jun 2009 19:51:39 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79498</guid>
		<description>Peter, perhaps you&#039;ll find time later?</description>
		<content:encoded><![CDATA[<p>Peter, perhaps you&#8217;ll find time later?</p>
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		<title>By: Peter Coles</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79448</link>
		<dc:creator>Peter Coles</dc:creator>
		<pubDate>Thu, 18 Jun 2009 09:18:24 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79448</guid>
		<description>I was going to comment on this, but I don&#039;t have time.</description>
		<content:encoded><![CDATA[<p>I was going to comment on this, but I don&#8217;t have time.</p>
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		<title>By: Eric Habegger</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79428</link>
		<dc:creator>Eric Habegger</dc:creator>
		<pubDate>Thu, 18 Jun 2009 04:54:55 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79428</guid>
		<description>It seems to me the whole idea of trying to eliminate the idea of time is sort of like trying to negate one&#039;s entire experience as a human being. What&#039;s the point? We are born, we age, and we die, and we define these stages by the ordering of events in our own experience of time. We all experience these things and it seems to me only someone who experiences these things in a significantly different way from most of us would dare claim that time is not an extremely useful concept. It strikes me as a sort of dilletantism bordering on arrogance to think that time should not be a beautiful concept.

My own feeling is that the commonality of description of time in the quantum and classical world relates to the appearance of change with the passage of time. Things change around us and within us even if we try to avoid it. Similarly I think fluctuations in space time are the equivalent to the passage of time in the classical world, but happening in discrete steps. 

I seldom agree with Sean but I wholeheartedly agree with him on his reaction to eliminating the idea of time. Even if you can reduce time as an emergent property of fluctuations in space related to thermodynamics, what&#039;s the point. A rose by any other name would smell as sweet.</description>
		<content:encoded><![CDATA[<p>It seems to me the whole idea of trying to eliminate the idea of time is sort of like trying to negate one&#8217;s entire experience as a human being. What&#8217;s the point? We are born, we age, and we die, and we define these stages by the ordering of events in our own experience of time. We all experience these things and it seems to me only someone who experiences these things in a significantly different way from most of us would dare claim that time is not an extremely useful concept. It strikes me as a sort of dilletantism bordering on arrogance to think that time should not be a beautiful concept.</p>
<p>My own feeling is that the commonality of description of time in the quantum and classical world relates to the appearance of change with the passage of time. Things change around us and within us even if we try to avoid it. Similarly I think fluctuations in space time are the equivalent to the passage of time in the classical world, but happening in discrete steps. </p>
<p>I seldom agree with Sean but I wholeheartedly agree with him on his reaction to eliminating the idea of time. Even if you can reduce time as an emergent property of fluctuations in space related to thermodynamics, what&#8217;s the point. A rose by any other name would smell as sweet.</p>
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		<title>By: Fundie</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79415</link>
		<dc:creator>Fundie</dc:creator>
		<pubDate>Thu, 18 Jun 2009 02:19:40 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79415</guid>
		<description>I&#039;m afraid Sean has put his finger on exactly what was wrong with the FQXi essay contest [apart, that is, from the failure to weed out the obvious cranks]. There was way too much vague talk about timelessness and such stuff, and way too little about actual concrete physical models of anything. I was tempted to submit an essay, was dissuaded by the cranks, and was very glad that I hadn&#039;t bothered when I saw who won.

For sure there is an interesting issue lurking here --- but whatever it is, what is needed at this point is a deep physics argument with lots of equations.</description>
		<content:encoded><![CDATA[<p>I&#8217;m afraid Sean has put his finger on exactly what was wrong with the FQXi essay contest [apart, that is, from the failure to weed out the obvious cranks]. There was way too much vague talk about timelessness and such stuff, and way too little about actual concrete physical models of anything. I was tempted to submit an essay, was dissuaded by the cranks, and was very glad that I hadn&#8217;t bothered when I saw who won.</p>
<p>For sure there is an interesting issue lurking here &#8212; but whatever it is, what is needed at this point is a deep physics argument with lots of equations.</p>
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		<title>By: Wade Kelman</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/comment-page-1/#comment-79412</link>
		<dc:creator>Wade Kelman</dc:creator>
		<pubDate>Thu, 18 Jun 2009 01:38:00 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2009/06/17/timelessness/#comment-79412</guid>
		<description>Perhaps saying that Time does not exist will have some testable consequences, as does my saying that Magnetism does not have an independent existence, and is not a force in its own right.  

Magnetism is an artifact of continuous electrostatic field lines and the finite speed of light.  If the speed of light were infinite, there would be no &quot;magnetic force&quot;, or lateral shift in the direction of the  electrostatic field lines of force.  That being so, I predict that magnetic monopoles will never be found, because they do not exist.  Neither do centripetal monopoles exist.</description>
		<content:encoded><![CDATA[<p>Perhaps saying that Time does not exist will have some testable consequences, as does my saying that Magnetism does not have an independent existence, and is not a force in its own right.  </p>
<p>Magnetism is an artifact of continuous electrostatic field lines and the finite speed of light.  If the speed of light were infinite, there would be no &#8220;magnetic force&#8221;, or lateral shift in the direction of the  electrostatic field lines of force.  That being so, I predict that magnetic monopoles will never be found, because they do not exist.  Neither do centripetal monopoles exist.</p>
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