<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments on: Time Travel for Beginners</title>
	<atom:link href="http://themoderatevoice.com/25095/time-travel-for-beginners/feed/" rel="self" type="application/rss+xml" />
	<link>http://themoderatevoice.com/25095/time-travel-for-beginners/</link>
	<description>An Internet hub with domestic and international news, analysis, original reporting, and popular features from the left, center, indies, centrists, moderates, and right</description>
	<lastBuildDate>Wed, 15 Feb 2012 04:43:19 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.1.2</generator>
	<item>
		<title>By: World line &#171; You Are Here</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167736</link>
		<dc:creator>World line &#171; You Are Here</dc:creator>
		<pubDate>Tue, 23 Dec 2008 22:02:00 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167736</guid>
		<description>[...] Time Travel for Beginners   Possibly related posts: (automatically generated)lightsA certain slat of lightThe sky opened upDS Daily: Your favorite game for on-the-go [...]</description>
		<content:encoded><![CDATA[<p>[...] Time Travel for Beginners   Possibly related posts: (automatically generated)lightsA certain slat of lightThe sky opened upDS Daily: Your favorite game for on-the-go [...]</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Dyre42</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167491</link>
		<dc:creator>Dyre42</dc:creator>
		<pubDate>Fri, 19 Dec 2008 13:26:09 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167491</guid>
		<description>So that means that I won&#039;t be delivering that Illudium Q-36 Explosive Space Modulator to myself next week? &lt;br&gt;&lt;br&gt;Bummer.</description>
		<content:encoded><![CDATA[<p>So that means that I won&#39;t be delivering that Illudium Q-36 Explosive Space Modulator to myself next week? </p>
<p>Bummer.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Jim_Satterfield</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167467</link>
		<dc:creator>Jim_Satterfield</dc:creator>
		<pubDate>Fri, 19 Dec 2008 03:20:58 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167467</guid>
		<description>There is no dark energy, just doppler shifted gravity.</description>
		<content:encoded><![CDATA[<p>There is no dark energy, just doppler shifted gravity.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: AustinRoth</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167433</link>
		<dc:creator>AustinRoth</dc:creator>
		<pubDate>Thu, 18 Dec 2008 20:31:59 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167433</guid>
		<description>&quot;but until you have an alternative mechanism that has positive prediction capabilities that the current model doesn&#039;t, then people will just work on refining the existing one.&quot;&lt;br&gt;&lt;br&gt;Absolutely, and there are times that those efforts lead to the new theories. My comment was just a general one about at least admitting the current theories cannot be correct. And to be fair, there is a growing sense of that (lead to string theory among others, but that is another mess of its own), but eventually (and maybe it has already been proposed but is currently not accepted).&lt;br&gt;&lt;br&gt;I also agree science cannot stop just because known theories are suspected or even known to  be wrong, in the absence of a replacement, as you said. New and valid information still gets generated.</description>
		<content:encoded><![CDATA[<p>&#8220;but until you have an alternative mechanism that has positive prediction capabilities that the current model doesn&#39;t, then people will just work on refining the existing one.&#8221;</p>
<p>Absolutely, and there are times that those efforts lead to the new theories. My comment was just a general one about at least admitting the current theories cannot be correct. And to be fair, there is a growing sense of that (lead to string theory among others, but that is another mess of its own), but eventually (and maybe it has already been proposed but is currently not accepted).</p>
<p>I also agree science cannot stop just because known theories are suspected or even known to  be wrong, in the absence of a replacement, as you said. New and valid information still gets generated.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: mikkel</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167432</link>
		<dc:creator>mikkel</dc:creator>
		<pubDate>Thu, 18 Dec 2008 20:00:17 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167432</guid>
		<description>&quot;but for the first time, instead of going back and fixing the theory to account for the new observations, we apparently decided to FIX THE GALAXY to FIT THE THEORY.&quot;&lt;br&gt;&lt;br&gt;I disagree with that characterization. In fact I think it is the basic M.O. of science to do that. It&#039;s not necessarily all bad either.&lt;br&gt;&lt;br&gt;I mean look at special relativity. Nearly all of that (I&#039;d say 95%) arose because Lorentz and Poincare attempted to merge Maxwell&#039;s electromagnetism laws with observations that the particles displayed amounts of force that didn&#039;t make sense based on Newtonian mechanics. So they came up with a transform that was just a fix and then Einstein came along and (without giving credit) simply took the same ideas and hypothesized that maybe it wasn&#039;t unique to photons and electrons and was about matter in general. Thus, special relativity! &lt;br&gt;&lt;br&gt;However a lot of the behaviors they were trying to explain can be pretty well explained with quantum mechanics. If quantum mechanics as the new theory as developed before special relativity, it&#039;s highly possible that they would have just said &quot;well electrons and photons obey quantum mechanics principles and so that explain the discrepancy with Newtonian mechanics..&quot; and they&#039;d be right but that would have made it so the Lorentz transforms wouldn&#039;t have been necessary. Well until we expanded our theories about the Universe and developed better technology...but who knows how we would have described things differently.&lt;br&gt;&lt;br&gt;I think that science in general is very pro-mechanism rather than anti-observation. By that I mean you can point out flaws in the current model and even eventually convince scientists that they are real, but until you have an alternative mechanism that has positive prediction capabilities that the current model doesn&#039;t, then people will just work on refining the existing one. I&#039;m certainly finding this in my own work.</description>
		<content:encoded><![CDATA[<p>&#8220;but for the first time, instead of going back and fixing the theory to account for the new observations, we apparently decided to FIX THE GALAXY to FIT THE THEORY.&#8221;</p>
<p>I disagree with that characterization. In fact I think it is the basic M.O. of science to do that. It&#39;s not necessarily all bad either.</p>
<p>I mean look at special relativity. Nearly all of that (I&#39;d say 95%) arose because Lorentz and Poincare attempted to merge Maxwell&#39;s electromagnetism laws with observations that the particles displayed amounts of force that didn&#39;t make sense based on Newtonian mechanics. So they came up with a transform that was just a fix and then Einstein came along and (without giving credit) simply took the same ideas and hypothesized that maybe it wasn&#39;t unique to photons and electrons and was about matter in general. Thus, special relativity! </p>
<p>However a lot of the behaviors they were trying to explain can be pretty well explained with quantum mechanics. If quantum mechanics as the new theory as developed before special relativity, it&#39;s highly possible that they would have just said &#8220;well electrons and photons obey quantum mechanics principles and so that explain the discrepancy with Newtonian mechanics..&#8221; and they&#39;d be right but that would have made it so the Lorentz transforms wouldn&#39;t have been necessary. Well until we expanded our theories about the Universe and developed better technology&#8230;but who knows how we would have described things differently.</p>
<p>I think that science in general is very pro-mechanism rather than anti-observation. By that I mean you can point out flaws in the current model and even eventually convince scientists that they are real, but until you have an alternative mechanism that has positive prediction capabilities that the current model doesn&#39;t, then people will just work on refining the existing one. I&#39;m certainly finding this in my own work.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Jazz</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167431</link>
		<dc:creator>Jazz</dc:creator>
		<pubDate>Thu, 18 Dec 2008 19:13:30 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167431</guid>
		<description>Austin, I should go back and dig up the links to some of our radio shows earlier this year when Cindy and I were lining up an interview with Dr. Neil deGrasse Tyson. I was raging about so called &quot;dark matter&quot; for a solid week after that. Through the history of astrophysics, while trying to figure out how gravity works on vast scales, we came up with theory after theory about how the stars and planets moved.  As we became able to make greater and greater observations, the theories fell apart one by one and had to be replaced with new theories and models to explain what we were seeing next. Until now.  We see that the stars on the outside rim of the galaxy are moving FAR faster than we predicted they should (if they behaved like our planets do here) but for the first time, instead of going back and fixing the theory to account for the new observations, we apparently decided to FIX THE GALAXY to FIT THE THEORY.  So we invented Dark Matter that nobody can find. Drives me insane I tell you.</description>
		<content:encoded><![CDATA[<p>Austin, I should go back and dig up the links to some of our radio shows earlier this year when Cindy and I were lining up an interview with Dr. Neil deGrasse Tyson. I was raging about so called &#8220;dark matter&#8221; for a solid week after that. Through the history of astrophysics, while trying to figure out how gravity works on vast scales, we came up with theory after theory about how the stars and planets moved.  As we became able to make greater and greater observations, the theories fell apart one by one and had to be replaced with new theories and models to explain what we were seeing next. Until now.  We see that the stars on the outside rim of the galaxy are moving FAR faster than we predicted they should (if they behaved like our planets do here) but for the first time, instead of going back and fixing the theory to account for the new observations, we apparently decided to FIX THE GALAXY to FIT THE THEORY.  So we invented Dark Matter that nobody can find. Drives me insane I tell you.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: AustinRoth</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167429</link>
		<dc:creator>AustinRoth</dc:creator>
		<pubDate>Thu, 18 Dec 2008 19:04:24 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167429</guid>
		<description>jazz -&lt;br&gt;&lt;br&gt;I agree. Even as a student, I was struck on how many times in history all of physics (my field of study) was completely overturned. Yet each generation of physicists, and scientists as a whole, acts as if current knowledge and theories are fundamentally correct, and only need refinement.&lt;br&gt;&lt;br&gt;That leads to the current state of affairs, where more and more exotic theories and explanations are required to maintain the current hierarchy.&lt;br&gt;&lt;br&gt;Don&#039;t even get me started on dark matter and dark energy. That to me is a perfect example of making &#039;fixes&#039; to theories to fit data that otherwise contradict the current theories . It is like reading about the history of Luminiferous Aether (the Ether).</description>
		<content:encoded><![CDATA[<p>jazz -</p>
<p>I agree. Even as a student, I was struck on how many times in history all of physics (my field of study) was completely overturned. Yet each generation of physicists, and scientists as a whole, acts as if current knowledge and theories are fundamentally correct, and only need refinement.</p>
<p>That leads to the current state of affairs, where more and more exotic theories and explanations are required to maintain the current hierarchy.</p>
<p>Don&#39;t even get me started on dark matter and dark energy. That to me is a perfect example of making &#39;fixes&#39; to theories to fit data that otherwise contradict the current theories . It is like reading about the history of Luminiferous Aether (the Ether).</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: mikkel</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167428</link>
		<dc:creator>mikkel</dc:creator>
		<pubDate>Thu, 18 Dec 2008 19:03:32 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167428</guid>
		<description>Incidentally, I actually saw Stephen Hawking in person a couple years ago and this is primarily what he talked about. Well only briefly about time travel and more about &quot;branes.&quot; They think the other universes are only about 1-2 mm away which is pretty awesome. I actually think there is quite a bit of &quot;evidence&quot; and unanswered questions that make more sense with other universes close by and sometimes I wish I was born like 1000 years later when we might actually know.</description>
		<content:encoded><![CDATA[<p>Incidentally, I actually saw Stephen Hawking in person a couple years ago and this is primarily what he talked about. Well only briefly about time travel and more about &#8220;branes.&#8221; They think the other universes are only about 1-2 mm away which is pretty awesome. I actually think there is quite a bit of &#8220;evidence&#8221; and unanswered questions that make more sense with other universes close by and sometimes I wish I was born like 1000 years later when we might actually know.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Jazz</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167427</link>
		<dc:creator>Jazz</dc:creator>
		<pubDate>Thu, 18 Dec 2008 18:52:31 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167427</guid>
		<description>You know what you know until it doesn&#039;t work anymore and then you know something else. I think that should be one of the fundamental rules taught about the scientific method.</description>
		<content:encoded><![CDATA[<p>You know what you know until it doesn&#39;t work anymore and then you know something else. I think that should be one of the fundamental rules taught about the scientific method.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: mikkel</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167426</link>
		<dc:creator>mikkel</dc:creator>
		<pubDate>Thu, 18 Dec 2008 18:51:58 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167426</guid>
		<description>The alternate dimension theory was always interesting but it creates a far bigger paradox: black holes. The entire concept rests on the idea that gravity is a force that works across dimensions, but if there were all these other dimensions at different points in time then the different sized black holes would leak into the other dimensions and nothing would really be able to exist.&lt;br&gt;&lt;br&gt;It&#039;s more likely our concept of time and space is wrong.</description>
		<content:encoded><![CDATA[<p>The alternate dimension theory was always interesting but it creates a far bigger paradox: black holes. The entire concept rests on the idea that gravity is a force that works across dimensions, but if there were all these other dimensions at different points in time then the different sized black holes would leak into the other dimensions and nothing would really be able to exist.</p>
<p>It&#39;s more likely our concept of time and space is wrong.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: AustinRoth</title>
		<link>http://themoderatevoice.com/25095/time-travel-for-beginners/comment-page-1/#comment-167423</link>
		<dc:creator>AustinRoth</dc:creator>
		<pubDate>Thu, 18 Dec 2008 18:43:52 +0000</pubDate>
		<guid isPermaLink="false">http://themoderatevoice.com/25095/time-travel-for-beginners/#comment-167423</guid>
		<description>The problem with time travel is not the paradox issue. It is, at least for the wormhole solution, the energy requirements to create and maintain one beyond the quantum level, along with the need to harness negative energy and ghost radiation.&lt;br&gt;&lt;br&gt;I grew up reading and dreaming of interstellar space flight, time-travel, ect., (still do, in fact), but unfortunately through my studies of physics have come to realize without some new fundamentally different understanding of physics that replaces all current theories, they will always be just dreams.&lt;br&gt;&lt;br&gt;I do believe that we have hit the point that the patchwork required to keep the Standard Model working, even as well as it does work, is a clear sign that it is but another set of theories that explain what we can observe now, but there is another, completely different explination underlying physics yet to come.&lt;br&gt;&lt;br&gt;A great example of that is Newton&#039;s Law of Gravity, which is now known to not be correct at all, but rather is a good enough approximation until you get to very large-scale interstellar calculations. we still use it most of the time, because it gives answers well within any required margin of error,but fundamentally it is not correct.</description>
		<content:encoded><![CDATA[<p>The problem with time travel is not the paradox issue. It is, at least for the wormhole solution, the energy requirements to create and maintain one beyond the quantum level, along with the need to harness negative energy and ghost radiation.</p>
<p>I grew up reading and dreaming of interstellar space flight, time-travel, ect., (still do, in fact), but unfortunately through my studies of physics have come to realize without some new fundamentally different understanding of physics that replaces all current theories, they will always be just dreams.</p>
<p>I do believe that we have hit the point that the patchwork required to keep the Standard Model working, even as well as it does work, is a clear sign that it is but another set of theories that explain what we can observe now, but there is another, completely different explination underlying physics yet to come.</p>
<p>A great example of that is Newton&#39;s Law of Gravity, which is now known to not be correct at all, but rather is a good enough approximation until you get to very large-scale interstellar calculations. we still use it most of the time, because it gives answers well within any required margin of error,but fundamentally it is not correct.</p>
]]></content:encoded>
	</item>
</channel>
</rss>

