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	<title>Comments on: Spacedrive?</title>
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	<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/</link>
	<description>I am an astronomer, writer, and skeptic. I likes reality the way it is, and I aims to keep it that way. My real name is Phil Plait, and I run the Bad Astronomy blog.</description>
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		<title>By: Better Late</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/comment-page-2/#comment-220073</link>
		<dc:creator>Better Late</dc:creator>
		<pubDate>Thu, 15 Oct 2009 07:04:20 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/#comment-220073</guid>
		<description>Rather than debate this issue to the point of insanity, why don&#039;t they just try to experiment with this theory. Unfortunately we live in a world of scientific consensus that seems to rival the Spanish Inquisition whenver a new idea or one the goes against the consensus is introduced. Does anyone actually follow the scientific method anymore. It seems now that the current scientific method is Hypothesis, Censored by scientific establishment, give up. It is time to bring back applied scientists, not theorists who sit around with a cup of Dar Jeeling and discuss abstract concepts until their brains cannot take it anymore. Maybe we can use availible scientific concepts and maybe experiment for once. 

Another thing, whether it is the theory of relativity or global climate change. Unless it can be proven without a shred of doubt they are still theories.</description>
		<content:encoded><![CDATA[<p>Rather than debate this issue to the point of insanity, why don&#8217;t they just try to experiment with this theory. Unfortunately we live in a world of scientific consensus that seems to rival the Spanish Inquisition whenver a new idea or one the goes against the consensus is introduced. Does anyone actually follow the scientific method anymore. It seems now that the current scientific method is Hypothesis, Censored by scientific establishment, give up. It is time to bring back applied scientists, not theorists who sit around with a cup of Dar Jeeling and discuss abstract concepts until their brains cannot take it anymore. Maybe we can use availible scientific concepts and maybe experiment for once. </p>
<p>Another thing, whether it is the theory of relativity or global climate change. Unless it can be proven without a shred of doubt they are still theories.</p>
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		<title>By: This</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/comment-page-2/#comment-181554</link>
		<dc:creator>This</dc:creator>
		<pubDate>Thu, 07 May 2009 05:00:42 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/#comment-181554</guid>
		<description>&lt;strong&gt;This&lt;/strong&gt;

Have you been blogging long? not martha - bacon cups is a great blog, you have a great writing style too.  Found this post last Thursday and i&#039;ve been reading your blog since.  I&#039;ve subscribed to your RSS feed and I am excited for more quality posts ...</description>
		<content:encoded><![CDATA[<p><strong>This</strong></p>
<p>Have you been blogging long? not martha &#8211; bacon cups is a great blog, you have a great writing style too.  Found this post last Thursday and i&#8217;ve been reading your blog since.  I&#8217;ve subscribed to your RSS feed and I am excited for more quality posts &#8230;</p>
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		<title>By: stawek</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/comment-page-2/#comment-143790</link>
		<dc:creator>stawek</dc:creator>
		<pubDate>Mon, 29 Dec 2008 10:18:01 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/#comment-143790</guid>
		<description>Why is everyone so &#039;scared&#039; of extra dimensions? They are here, they MUST be here...
Look at your computer screen. It&#039;s flat - it&#039;s 2d (if we skip time for simplicity), isn&#039;t it?
Or maybe it&#039;s not. Each pixel of the screen may take a value that represents colour. This means, that you screen is a 3d construct on a 2d plane. Just by adding colours. That is why you may play 3d games on it - the third colour dimension is used to show the depth.
Now think about our 4d spacetime. Common misconception is that human can&#039;t imagine more than 3 dimensions, cause we can&#039;t see them. A huge error I think. WE ARE the 4th dimension - just for every point in space assign a value that represents the energy that resides in that point (ie an atom of your body) and we have a 5th dimension already. Add magnetic fields, gravity fields and whatnot and you may as well end up with 12 dimensions...
This is what Heim&#039;s done (or what I understand from his work). On top of our regular 4d he added dimensions representing quantum states. Simple.
The real chellenge is quantisation of space. If you divide space into little cubes then you have either prefferred directions (it&#039;s easier - &#039;shorter&#039; to move along axis than across the cubes, as diagonal of cube is longer than its side) or (if the cost of moving from one cube to another is the same no matter the direction) a circle should actually be a square (in a square the distance between midpoint and walls measured in &#039;tiles&#039; is equal for each point on perimeter)</description>
		<content:encoded><![CDATA[<p>Why is everyone so &#8217;scared&#8217; of extra dimensions? They are here, they MUST be here&#8230;<br />
Look at your computer screen. It&#8217;s flat &#8211; it&#8217;s 2d (if we skip time for simplicity), isn&#8217;t it?<br />
Or maybe it&#8217;s not. Each pixel of the screen may take a value that represents colour. This means, that you screen is a 3d construct on a 2d plane. Just by adding colours. That is why you may play 3d games on it &#8211; the third colour dimension is used to show the depth.<br />
Now think about our 4d spacetime. Common misconception is that human can&#8217;t imagine more than 3 dimensions, cause we can&#8217;t see them. A huge error I think. WE ARE the 4th dimension &#8211; just for every point in space assign a value that represents the energy that resides in that point (ie an atom of your body) and we have a 5th dimension already. Add magnetic fields, gravity fields and whatnot and you may as well end up with 12 dimensions&#8230;<br />
This is what Heim&#8217;s done (or what I understand from his work). On top of our regular 4d he added dimensions representing quantum states. Simple.<br />
The real chellenge is quantisation of space. If you divide space into little cubes then you have either prefferred directions (it&#8217;s easier &#8211; &#8217;shorter&#8217; to move along axis than across the cubes, as diagonal of cube is longer than its side) or (if the cost of moving from one cube to another is the same no matter the direction) a circle should actually be a square (in a square the distance between midpoint and walls measured in &#8217;tiles&#8217; is equal for each point on perimeter)</p>
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		<title>By: Mark Oller</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/comment-page-2/#comment-97875</link>
		<dc:creator>Mark Oller</dc:creator>
		<pubDate>Wed, 09 Jul 2008 09:41:47 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/#comment-97875</guid>
		<description>No one mentioned the possibility of time travel.  I know that approaching the speed of light slows time, but can one travel backwards in time by exceeding the speed of light?  Can one control which past one travels to?  Perfect accuracy is unnecessary.  Might it also be possible to travel to parallel worlds, which split off from ours in the past?

As for travelling to the stars, they&#039;re awfully hot, and the planets orbiting the stars are only slightly more hospitable, but maybe we will find that they were colonized by humans billions of years ago.  Maybe we will even go on dinosaur safaris.  Don&#039;t laugh, there are hundreds of out of place artifacts (ooparts). Some date back to the paleozoic, and a beautiful pewter vase with silver inlaid flowers was blasted out of the precambrian Roxbury conglomerate in Massachussets in 1852.  Nowadays, such anomalies are usually ignored but not always.</description>
		<content:encoded><![CDATA[<p>No one mentioned the possibility of time travel.  I know that approaching the speed of light slows time, but can one travel backwards in time by exceeding the speed of light?  Can one control which past one travels to?  Perfect accuracy is unnecessary.  Might it also be possible to travel to parallel worlds, which split off from ours in the past?</p>
<p>As for travelling to the stars, they&#8217;re awfully hot, and the planets orbiting the stars are only slightly more hospitable, but maybe we will find that they were colonized by humans billions of years ago.  Maybe we will even go on dinosaur safaris.  Don&#8217;t laugh, there are hundreds of out of place artifacts (ooparts). Some date back to the paleozoic, and a beautiful pewter vase with silver inlaid flowers was blasted out of the precambrian Roxbury conglomerate in Massachussets in 1852.  Nowadays, such anomalies are usually ignored but not always.</p>
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		<title>By: Ozzie</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/comment-page-2/#comment-9508</link>
		<dc:creator>Ozzie</dc:creator>
		<pubDate>Thu, 27 Mar 2008 14:02:36 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/#comment-9508</guid>
		<description>I&#039;m primarily a planetary geologist, but I&#039;ve taken a great interest in quantum physics, GR/Sr and such for a long time. I believe, with all your protestations of Heim and others....even if it&#039;s protestations for or against...you&#039;ve all missed the point. That points being this: at one stage they thought Einstein was a crackpot and no one could understand his theories. Until they studied what he wrote, did the experiments and found he was pretty much on the ball. However, Einstein, no matter how much his physics paradigms are taken as gospel, is not the last word in physics. Regardless of the experiments and such, that have been done since his theory&#039;s publication, it doesn&#039;t mean that he is correct in all of his assumptions about what constitutes reality. Hell, he couldn&#039;t get his head around quantum physics, so what does that say about his supposed &quot;genius&quot;.

Given that none of you are completely familiar with what Heim wrote, as are most physicists as well, don&#039;t decry his theory/theories until you&#039;ve done the experimental work yourself. Or have seen and can vouch for experiments done by others. Even then, it won&#039;t necessarily discount his work because we may not have the requisite technology to fully perform any experiments to confirm/deny the theory. This was the case with Einstein for quite a number of years.

Discounting anything, without proof positive that you&#039;re correct in your assumptions, is a very dangerous situation to get yourself into. You may never see the results come to light (as it maybe 100 years before they come in, for instance), but you may have to, metaphorically, eat your own words. You never know what&#039;s around the corner.</description>
		<content:encoded><![CDATA[<p>I&#8217;m primarily a planetary geologist, but I&#8217;ve taken a great interest in quantum physics, GR/Sr and such for a long time. I believe, with all your protestations of Heim and others&#8230;.even if it&#8217;s protestations for or against&#8230;you&#8217;ve all missed the point. That points being this: at one stage they thought Einstein was a crackpot and no one could understand his theories. Until they studied what he wrote, did the experiments and found he was pretty much on the ball. However, Einstein, no matter how much his physics paradigms are taken as gospel, is not the last word in physics. Regardless of the experiments and such, that have been done since his theory&#8217;s publication, it doesn&#8217;t mean that he is correct in all of his assumptions about what constitutes reality. Hell, he couldn&#8217;t get his head around quantum physics, so what does that say about his supposed &#8220;genius&#8221;.</p>
<p>Given that none of you are completely familiar with what Heim wrote, as are most physicists as well, don&#8217;t decry his theory/theories until you&#8217;ve done the experimental work yourself. Or have seen and can vouch for experiments done by others. Even then, it won&#8217;t necessarily discount his work because we may not have the requisite technology to fully perform any experiments to confirm/deny the theory. This was the case with Einstein for quite a number of years.</p>
<p>Discounting anything, without proof positive that you&#8217;re correct in your assumptions, is a very dangerous situation to get yourself into. You may never see the results come to light (as it maybe 100 years before they come in, for instance), but you may have to, metaphorically, eat your own words. You never know what&#8217;s around the corner.</p>
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		<title>By: Joshua Perry</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/comment-page-2/#comment-9507</link>
		<dc:creator>Joshua Perry</dc:creator>
		<pubDate>Wed, 23 Jan 2008 23:51:51 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/#comment-9507</guid>
		<description>Remember that when you go into a black hole and reach the singularity, you&#039;ll see two dimensions of time in order for GR to remain true?  Remember that the gravitational force in a black hole is so strong light cannot escape?  So if you can&#039;t travel faster than light, why is light not fast enough to escape from the gravitational force of a black hole?  Let&#039;s step over to the event horizon over here and I will show you that Heim is right...  Oh wait that won&#039;t work very well.  So let&#039;s use a smaller example.  Let&#039;s take a big ring and spin it really fast.  Then let&#039;s apply a huge EM field inside it.  Oh no, we created a black hole and we&#039;re traveling faster than light!</description>
		<content:encoded><![CDATA[<p>Remember that when you go into a black hole and reach the singularity, you&#8217;ll see two dimensions of time in order for GR to remain true?  Remember that the gravitational force in a black hole is so strong light cannot escape?  So if you can&#8217;t travel faster than light, why is light not fast enough to escape from the gravitational force of a black hole?  Let&#8217;s step over to the event horizon over here and I will show you that Heim is right&#8230;  Oh wait that won&#8217;t work very well.  So let&#8217;s use a smaller example.  Let&#8217;s take a big ring and spin it really fast.  Then let&#8217;s apply a huge EM field inside it.  Oh no, we created a black hole and we&#8217;re traveling faster than light!</p>
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		<title>By: mike burkhart</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/comment-page-2/#comment-9506</link>
		<dc:creator>mike burkhart</dc:creator>
		<pubDate>Wed, 26 Sep 2007 23:13:55 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2006/01/05/spacedrive/#comment-9506</guid>
		<description>What can I say warp factor 1 engage Ithink we have another video game fan after all video game addicts have been traveling in hyperspace in arcades and home systems since atari realeased asteroids</description>
		<content:encoded><![CDATA[<p>What can I say warp factor 1 engage Ithink we have another video game fan after all video game addicts have been traveling in hyperspace in arcades and home systems since atari realeased asteroids</p>
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