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	<title>Comments on: The acceleration of history</title>
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	<link>http://bit-player.org/2011/the-acceleration-of-history</link>
	<description>An amateur's outlook on computation and mathematics.</description>
	<pubDate>Thu, 17 May 2012 10:24:47 +0000</pubDate>
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		<title>By: Cody</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3936</link>
		<dc:creator>Cody</dc:creator>
		<pubDate>Mon, 09 Jan 2012 19:40:54 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3936</guid>
		<description>Sometime in high school—after learning about Dark Energy searches from National Geographic and a brief explanation by my physics teacher—knowing Dark Matter helped to hold the place together and Dark Energy seemed to be pulling it apart I thought, "wouldn't it be funny if the two mysteries canceled one another out?"

Joking aside I remain a bit skeptical of the current Standard Cosmology, and very concerned that cosmologists &#38; astrophysicists have overstated the case for DE/DM/Inflation. If any of these mechanisms don't pan out you can bet that opponents of reason—who use every &lt;i&gt;appearance&lt;/i&gt; of revision to discount the validity of science—will have this as further fodder. So I would just like to see modern cosmology all presented a tiny bit more tentatively, as science often should be.

From my perspective the problem with the whole situation is that we haven't &lt;i&gt;really&lt;/i&gt; verified General Relativity on the galactic and intergalactic scales, which make DM/DE/Inflation seem like ad hoc corrections to keep Big Bang + GR consistent with observation. I'm not yet so convinced the assumption that most matter and energy in the universe is exotic and the behavior of spacetime curvature is uniform across scales is any more reasonable than assuming most of the matter and energy is the same while the behavior of spacetime changes with scale. (Though I suppose the last bit is essentially all dark energy says anyway.) When discussing it with experts I hear arguments about the accuracy of Big Bang nucleosynthesis predictions and the CMB fit—I'll be much more convinced if one of the many searches for dark matter succeeds! (And how many DM searches must fail before it starts to look like aether?)

However, I'm no expert, so I concede that the opinions of those with a greater grasp of the relevant concepts should be valued far more than those (like me) who's understanding is lacking.

On the other hand, occasionally in discussions with expert proponents of Standard Cosmology they'll concede that the alternatives are not yet completely ruled out. It seems we've succeeded in explaining everything within arms length, and without a bigger ruler we're stuck with a degree of mere speculation over which rules extend elsewhere and which ones will need revising. (Or maybe the small scale will save us—perhaps a mature theory of quantum gravity would make sense of it all!)</description>
		<content:encoded><![CDATA[<p>Sometime in high school—after learning about Dark Energy searches from National Geographic and a brief explanation by my physics teacher—knowing Dark Matter helped to hold the place together and Dark Energy seemed to be pulling it apart I thought, &#8220;wouldn&#8217;t it be funny if the two mysteries canceled one another out?&#8221;</p>
<p>Joking aside I remain a bit skeptical of the current Standard Cosmology, and very concerned that cosmologists &amp; astrophysicists have overstated the case for DE/DM/Inflation. If any of these mechanisms don&#8217;t pan out you can bet that opponents of reason—who use every <i>appearance</i> of revision to discount the validity of science—will have this as further fodder. So I would just like to see modern cosmology all presented a tiny bit more tentatively, as science often should be.</p>
<p>From my perspective the problem with the whole situation is that we haven&#8217;t <i>really</i> verified General Relativity on the galactic and intergalactic scales, which make DM/DE/Inflation seem like ad hoc corrections to keep Big Bang + GR consistent with observation. I&#8217;m not yet so convinced the assumption that most matter and energy in the universe is exotic and the behavior of spacetime curvature is uniform across scales is any more reasonable than assuming most of the matter and energy is the same while the behavior of spacetime changes with scale. (Though I suppose the last bit is essentially all dark energy says anyway.) When discussing it with experts I hear arguments about the accuracy of Big Bang nucleosynthesis predictions and the CMB fit—I&#8217;ll be much more convinced if one of the many searches for dark matter succeeds! (And how many DM searches must fail before it starts to look like aether?)</p>
<p>However, I&#8217;m no expert, so I concede that the opinions of those with a greater grasp of the relevant concepts should be valued far more than those (like me) who&#8217;s understanding is lacking.</p>
<p>On the other hand, occasionally in discussions with expert proponents of Standard Cosmology they&#8217;ll concede that the alternatives are not yet completely ruled out. It seems we&#8217;ve succeeded in explaining everything within arms length, and without a bigger ruler we&#8217;re stuck with a degree of mere speculation over which rules extend elsewhere and which ones will need revising. (Or maybe the small scale will save us—perhaps a mature theory of quantum gravity would make sense of it all!)</p>
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		<title>By: Jim Ward</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3926</link>
		<dc:creator>Jim Ward</dc:creator>
		<pubDate>Mon, 26 Dec 2011 20:36:42 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3926</guid>
		<description>Could also be the glut of scientific information out there. Today there's a new theory put for forth by a new scientist every year, hard for an educated layman to know if it's worth storing in the old cerebral cortex. In Hubble's time someone had to write a popular book, by then the expert consensus had congealed.</description>
		<content:encoded><![CDATA[<p>Could also be the glut of scientific information out there. Today there&#8217;s a new theory put for forth by a new scientist every year, hard for an educated layman to know if it&#8217;s worth storing in the old cerebral cortex. In Hubble&#8217;s time someone had to write a popular book, by then the expert consensus had congealed.</p>
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		<title>By: saurabh</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3924</link>
		<dc:creator>saurabh</dc:creator>
		<pubDate>Sat, 24 Dec 2011 18:38:27 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3924</guid>
		<description>The reason the changes in convention are widely accepted nowadays is because of the lack of healthy scepticism. If you do not accept the prevalent notions in cosmology/astrophysics, you are lumped together or not far apart from the religious nutjob types. A magazine with the title of Skeptical Enquirer is sceptical about what every rational thinking person knows is BS. This is not true scepticism at all, rather the reverse. We need more Smolins and Woits yelling Not Even Wrong every time a David Deutsch gets a feature length article in the press.</description>
		<content:encoded><![CDATA[<p>The reason the changes in convention are widely accepted nowadays is because of the lack of healthy scepticism. If you do not accept the prevalent notions in cosmology/astrophysics, you are lumped together or not far apart from the religious nutjob types. A magazine with the title of Skeptical Enquirer is sceptical about what every rational thinking person knows is BS. This is not true scepticism at all, rather the reverse. We need more Smolins and Woits yelling Not Even Wrong every time a David Deutsch gets a feature length article in the press.</p>
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		<title>By: Bill Copeland</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3921</link>
		<dc:creator>Bill Copeland</dc:creator>
		<pubDate>Wed, 21 Dec 2011 20:19:23 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3921</guid>
		<description>There is definitely a large segment of the population that resists the notion that the universe has a fixed birth time and life time: Trekkies.  Star Trek, Star Wars, and other Sci fi fans have grown quite accustomed to a universe that is infinite and that allows faster-than-light travel.  

Some young Ph. D. out there will start to look very closely at the factual support for the Big Bang theory and see the holes.  You say the decision between steady-state and big-bang models "was finally resolved in the 1960s with the discovery of the cosmic background radiation." Was it resolved, or was it rationalized into the established big-bang theory?  Cosmic background radiatin (CBR) is similar to, in fact impossible to distinguish from, black-body radiation (BBR).  BBR naturally accumulate after billions of years of stellar and galactic evolution.  CMR data is in fact so smooth that the data is very close to the noise in the data collection system.  

If Fred Hoyle had been more creative and collaborative, he would have saved the infinite universe model, but he had to think up an unsupported fiction about matter being spontaneously created in space.  Now we know that matter is recycled through black holes at the center of every mature galaxy.  The galaxy sweeps in material from intergalactic space, compresses some of it into stars, and then over billions of years, spirals that matter into the black hole.  The black hole spins up by conservation of angular momentum, so that, when the disk is thin enough, the instabilities introduced by new matter falling in result in the production of massive jets of extremely compressed material.  That is the recycling process of mass and energy.  That material is not new, but it is seen as highly red shifted and consequently misinterpreted as more distant than the galaxy, and mislabeled in various categories such as quasars.  The energy-mass output is also misinterpreted because, rather than existing at some great red-shift distance, it is actually  at approximately the same distance as its parent galaxy.  See the heroic work of Halton Arp in his papers and conveniently in his books, including "Seeing Red," in which he answers every issue statistically and observationally about the relationships between galaxies, black holes, galactic jets, Seyfert galaxies, BL Lac objects, quasars, and other ejecta.

The whole big-bang theory got started by a simple misinterpretation of the red shift seen by Hubble.  Hubble never expressed the notion that the red shift was caused by the recession of galaxies.  He had some other notions.  See Edwin Hubble’s paper “Cepheids in Spiral Nebulae”.  

Consider the possibility that the massive, over-kludged big-bang theory is rooted in the misinterpretation of the "cosmological redshift."  From the  redshift, the simple explanation was cosmic expansion.  But the universe is too smooth, so Guth gave us the physically unsupportable notions of cosmic inflation.  But the redshift got larger, the farther back in time we look, so dark energy had to be invented.  But wait.  Billions of stars and galaxies are being pulled by gravitational fields that cannot be accounted for by known regions of baryons, so dark matter had to be hypothesized.  

It is impossible to test these aspects of the big-bang theory.  The kludge factors that support cosmic expansion can be dispensed with, if an alternative explanation for the red shift is accepted.  The physics community isn't sure what that alternative explanation is, so they cling to the fiction of cosmological recession.  But there are perfectly good alternatives for photon energy loss: 1) traversing continuous  gravitational fields, 2) traversing electromagnetic fields, 3) The Compton effect  (close encounters with hydrogen electrons), and 4) my current favorite, travel through high-energy plasma, which pervades space.  There might be some other cause of stellar red shift.  The point is that the whole big-bang theory depends on the current interpretation of the red shift, and ignores hard data that shows other alternatives.

Not all of our citizens are benighted about cosmology.  Star Wars fans and Trekkies have grown up in a universe that is intuitively infinite in space and time.  One of them will prove it to the astrophysics establishment.

See http://tiny.cc/7vxc8 at LectureMaker.com</description>
		<content:encoded><![CDATA[<p>There is definitely a large segment of the population that resists the notion that the universe has a fixed birth time and life time: Trekkies.  Star Trek, Star Wars, and other Sci fi fans have grown quite accustomed to a universe that is infinite and that allows faster-than-light travel.  </p>
<p>Some young Ph. D. out there will start to look very closely at the factual support for the Big Bang theory and see the holes.  You say the decision between steady-state and big-bang models &#8220;was finally resolved in the 1960s with the discovery of the cosmic background radiation.&#8221; Was it resolved, or was it rationalized into the established big-bang theory?  Cosmic background radiatin (CBR) is similar to, in fact impossible to distinguish from, black-body radiation (BBR).  BBR naturally accumulate after billions of years of stellar and galactic evolution.  CMR data is in fact so smooth that the data is very close to the noise in the data collection system.  </p>
<p>If Fred Hoyle had been more creative and collaborative, he would have saved the infinite universe model, but he had to think up an unsupported fiction about matter being spontaneously created in space.  Now we know that matter is recycled through black holes at the center of every mature galaxy.  The galaxy sweeps in material from intergalactic space, compresses some of it into stars, and then over billions of years, spirals that matter into the black hole.  The black hole spins up by conservation of angular momentum, so that, when the disk is thin enough, the instabilities introduced by new matter falling in result in the production of massive jets of extremely compressed material.  That is the recycling process of mass and energy.  That material is not new, but it is seen as highly red shifted and consequently misinterpreted as more distant than the galaxy, and mislabeled in various categories such as quasars.  The energy-mass output is also misinterpreted because, rather than existing at some great red-shift distance, it is actually  at approximately the same distance as its parent galaxy.  See the heroic work of Halton Arp in his papers and conveniently in his books, including &#8220;Seeing Red,&#8221; in which he answers every issue statistically and observationally about the relationships between galaxies, black holes, galactic jets, Seyfert galaxies, BL Lac objects, quasars, and other ejecta.</p>
<p>The whole big-bang theory got started by a simple misinterpretation of the red shift seen by Hubble.  Hubble never expressed the notion that the red shift was caused by the recession of galaxies.  He had some other notions.  See Edwin Hubble’s paper “Cepheids in Spiral Nebulae”.  </p>
<p>Consider the possibility that the massive, over-kludged big-bang theory is rooted in the misinterpretation of the &#8220;cosmological redshift.&#8221;  From the  redshift, the simple explanation was cosmic expansion.  But the universe is too smooth, so Guth gave us the physically unsupportable notions of cosmic inflation.  But the redshift got larger, the farther back in time we look, so dark energy had to be invented.  But wait.  Billions of stars and galaxies are being pulled by gravitational fields that cannot be accounted for by known regions of baryons, so dark matter had to be hypothesized.  </p>
<p>It is impossible to test these aspects of the big-bang theory.  The kludge factors that support cosmic expansion can be dispensed with, if an alternative explanation for the red shift is accepted.  The physics community isn&#8217;t sure what that alternative explanation is, so they cling to the fiction of cosmological recession.  But there are perfectly good alternatives for photon energy loss: 1) traversing continuous  gravitational fields, 2) traversing electromagnetic fields, 3) The Compton effect  (close encounters with hydrogen electrons), and 4) my current favorite, travel through high-energy plasma, which pervades space.  There might be some other cause of stellar red shift.  The point is that the whole big-bang theory depends on the current interpretation of the red shift, and ignores hard data that shows other alternatives.</p>
<p>Not all of our citizens are benighted about cosmology.  Star Wars fans and Trekkies have grown up in a universe that is intuitively infinite in space and time.  One of them will prove it to the astrophysics establishment.</p>
<p>See <a href="http://tiny.cc/7vxc8" rel="nofollow">http://tiny.cc/7vxc8</a> at LectureMaker.com</p>
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		<title>By: Franklin Chen</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3920</link>
		<dc:creator>Franklin Chen</dc:creator>
		<pubDate>Wed, 21 Dec 2011 18:40:01 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3920</guid>
		<description>A nice article by Alan Lightman on the state of science (particularly physics) just came to my attention: http://www.harpers.org/archive/2011/12/0083720</description>
		<content:encoded><![CDATA[<p>A nice article by Alan Lightman on the state of science (particularly physics) just came to my attention: <a href="http://www.harpers.org/archive/2011/12/0083720" rel="nofollow">http://www.harpers.org/archive/2011/12/0083720</a></p>
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		<title>By: Franklin Chen</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3919</link>
		<dc:creator>Franklin Chen</dc:creator>
		<pubDate>Wed, 21 Dec 2011 04:31:20 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3919</guid>
		<description>What John said is exactly the sentiment of my educated friends, and my own sentiment. I think it is foolhardy to jump to grand conclusions about the world based on possibly very tentative contemporary ideas that happen to have the label "science" attached to them. That would be scientism, and we've seen how science keeps on changing with time. Radical changes in just the past couple of decades over nutrition, cognitive psychology, linguistics, genetics show that it is dangerous to be too attached to metaphysical or political views based on our current scientific research.</description>
		<content:encoded><![CDATA[<p>What John said is exactly the sentiment of my educated friends, and my own sentiment. I think it is foolhardy to jump to grand conclusions about the world based on possibly very tentative contemporary ideas that happen to have the label &#8220;science&#8221; attached to them. That would be scientism, and we&#8217;ve seen how science keeps on changing with time. Radical changes in just the past couple of decades over nutrition, cognitive psychology, linguistics, genetics show that it is dangerous to be too attached to metaphysical or political views based on our current scientific research.</p>
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		<title>By: John</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3918</link>
		<dc:creator>John</dc:creator>
		<pubDate>Wed, 21 Dec 2011 04:08:30 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3918</guid>
		<description>They are largely irrelevant to anybody.  Also, my impression is that physics has come to love too much the "revolution" narrative of science, where previously accepted truths can be overthrown dramatically.  The fact is that these cosmological questions are, for the moment, *extremely* poorly understood.  We have educated guesses, but we are really very ignorant, there is little hard evidence, and it wouldn't be too much of a surprise if some future discovery overturns the current picture completely.</description>
		<content:encoded><![CDATA[<p>They are largely irrelevant to anybody.  Also, my impression is that physics has come to love too much the &#8220;revolution&#8221; narrative of science, where previously accepted truths can be overthrown dramatically.  The fact is that these cosmological questions are, for the moment, *extremely* poorly understood.  We have educated guesses, but we are really very ignorant, there is little hard evidence, and it wouldn&#8217;t be too much of a surprise if some future discovery overturns the current picture completely.</p>
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		<title>By: Franklin Chen</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3917</link>
		<dc:creator>Franklin Chen</dc:creator>
		<pubDate>Wed, 21 Dec 2011 03:37:46 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3917</guid>
		<description>I am fairly shocked by the tone of this post, suggesting that the "public" is entirely stupid, anti-scientific, or ignorant. I am in constant contact with scientists, engineers, mathematicians, computer programmers, etc., whom I would not characterize in that way. And they sure have heard about dark energy, multiverses, and the rest from the popular media. And most of them are completely uninterested in all those cosmological speculations. I, with a degree in physics, am completely uninterested in them.

These cosmological speculations have nowhere near the kind of concrete and empirical basis that exists work in genetics, neuroscience, etc. It would be foolhardy to look toward them for some kind of metaphysical comfort.</description>
		<content:encoded><![CDATA[<p>I am fairly shocked by the tone of this post, suggesting that the &#8220;public&#8221; is entirely stupid, anti-scientific, or ignorant. I am in constant contact with scientists, engineers, mathematicians, computer programmers, etc., whom I would not characterize in that way. And they sure have heard about dark energy, multiverses, and the rest from the popular media. And most of them are completely uninterested in all those cosmological speculations. I, with a degree in physics, am completely uninterested in them.</p>
<p>These cosmological speculations have nowhere near the kind of concrete and empirical basis that exists work in genetics, neuroscience, etc. It would be foolhardy to look toward them for some kind of metaphysical comfort.</p>
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		<title>By: Brian</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3916</link>
		<dc:creator>Brian</dc:creator>
		<pubDate>Wed, 21 Dec 2011 02:20:46 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3916</guid>
		<description>The lack of impact plus the lack of ideological battles, I'd say. Evolution also has zero impact on people's daily lives, but it's a huge fight that stretches all the way from the 19th century to the present day.

It may also be worth noting that many of those same people also embrace the idea of a universe that is less than 10,000 years old. For them, issues regarding cosmic inflation or dark energy aren't even on the radar. (If they've even heard of the subjects to begin with, they likely consider them to be nothing more than evidence that scientists just make things up to keep themselves busy.)

Now, if we had religious sects that disagreed over whether the universe was 13 billion or 15 billion years old, or over the existence of pocket universes, then I suspect we'd see more public engagement and resistance. But as it is, once you're already beyond ideas like millions of stars and millions of years, all further elaborations are a little too abstract to engage the tribal emotions.</description>
		<content:encoded><![CDATA[<p>The lack of impact plus the lack of ideological battles, I&#8217;d say. Evolution also has zero impact on people&#8217;s daily lives, but it&#8217;s a huge fight that stretches all the way from the 19th century to the present day.</p>
<p>It may also be worth noting that many of those same people also embrace the idea of a universe that is less than 10,000 years old. For them, issues regarding cosmic inflation or dark energy aren&#8217;t even on the radar. (If they&#8217;ve even heard of the subjects to begin with, they likely consider them to be nothing more than evidence that scientists just make things up to keep themselves busy.)</p>
<p>Now, if we had religious sects that disagreed over whether the universe was 13 billion or 15 billion years old, or over the existence of pocket universes, then I suspect we&#8217;d see more public engagement and resistance. But as it is, once you&#8217;re already beyond ideas like millions of stars and millions of years, all further elaborations are a little too abstract to engage the tribal emotions.</p>
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		<title>By: Frank Ch. Eigler</title>
		<link>http://bit-player.org/2011/the-acceleration-of-history#comment-3915</link>
		<dc:creator>Frank Ch. Eigler</dc:creator>
		<pubDate>Wed, 21 Dec 2011 01:16:42 +0000</pubDate>
		<guid isPermaLink="false">http://bit-player.org/?p=1067#comment-3915</guid>
		<description>The indifference of the public is easily explained: modern cosmology has zero impact on people's daily lives, so revolutionary discoveries need only overcome inertia within the local scientific field.  Were this topic so politicized and disruptive as AGW, you get a flood of public "input", for better or for worse.</description>
		<content:encoded><![CDATA[<p>The indifference of the public is easily explained: modern cosmology has zero impact on people&#8217;s daily lives, so revolutionary discoveries need only overcome inertia within the local scientific field.  Were this topic so politicized and disruptive as AGW, you get a flood of public &#8220;input&#8221;, for better or for worse.</p>
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