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	<title>Comments on: Thought experiments</title>
	<atom:link href="http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/</link>
	<description>Random samplings from a universe of ideas.</description>
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		<title>By: Adam</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9225</link>
		<dc:creator>Adam</dc:creator>
		<pubDate>Tue, 20 Jun 2006 20:51:41 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9225</guid>
		<description>What if one of your MWI incarnations is in a world where MWI is not true?</description>
		<content:encoded><![CDATA[<p>What if one of your MWI incarnations is in a world where MWI is not true?</p>
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		<title>By: Brian</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9226</link>
		<dc:creator>Brian</dc:creator>
		<pubDate>Tue, 20 Jun 2006 16:13:42 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9226</guid>
		<description>I&#039;d be the one to take the coin, and go get my own danged banana with it.</description>
		<content:encoded><![CDATA[<p>I&#8217;d be the one to take the coin, and go get my own danged banana with it.</p>
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		<title>By: G</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9221</link>
		<dc:creator>G</dc:creator>
		<pubDate>Thu, 13 Apr 2006 15:08:49 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9221</guid>
		<description>So someone who may, or may not, be me may (or may not) get a universe encompassing banana? I&#039;d rather have a pineapple if it&#039;s all the same?</description>
		<content:encoded><![CDATA[<p>So someone who may, or may not, be me may (or may not) get a universe encompassing banana? I&#8217;d rather have a pineapple if it&#8217;s all the same?</p>
]]></content:encoded>
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	<item>
		<title>By: Plato</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9224</link>
		<dc:creator>Plato</dc:creator>
		<pubDate>Wed, 22 Mar 2006 16:34:45 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9224</guid>
		<description>Of course more on name.


I think one needed to understand this movement, or how the false vacuum is understood, and how the true vacuum is created.

Without this, has the idea of the Coleman-De Luccia instanton been refuted?</description>
		<content:encoded><![CDATA[<p>Of course more on name.</p>
<p>I think one needed to understand this movement, or how the false vacuum is understood, and how the true vacuum is created.</p>
<p>Without this, has the idea of the Coleman-De Luccia instanton been refuted?</p>
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		<title>By: Count Iblis</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9223</link>
		<dc:creator>Count Iblis</dc:creator>
		<pubDate>Wed, 22 Mar 2006 14:06:01 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9223</guid>
		<description>Plato,

Yes, the proposals for new physics at high energies can yield new problems. But the fact is that there are problems with old physics and somehow it must break down at higher energies...</description>
		<content:encoded><![CDATA[<p>Plato,</p>
<p>Yes, the proposals for new physics at high energies can yield new problems. But the fact is that there are problems with old physics and somehow it must break down at higher energies&#8230;</p>
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	<item>
		<title>By: Plato</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9222</link>
		<dc:creator>Plato</dc:creator>
		<pubDate>Wed, 22 Mar 2006 05:06:43 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9222</guid>
		<description>Count,

I don&#039;t have to tell how confusing this stuff all is. :) More on name.

Why the Higher energies?

John Ellis was good enough to transform our views, to the need required in cosmological conditions? It&#039;s there these issues although quickly dissipated, raise more questions as to the conditions for that &quot;new physics.&quot;</description>
		<content:encoded><![CDATA[<p>Count,</p>
<p>I don&#8217;t have to tell how confusing this stuff all is. <img src='http://blogs.discovermagazine.com/cosmicvariance/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  More on name.</p>
<p>Why the Higher energies?</p>
<p>John Ellis was good enough to transform our views, to the need required in cosmological conditions? It&#8217;s there these issues although quickly dissipated, raise more questions as to the conditions for that &#8220;new physics.&#8221;</p>
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	</item>
	<item>
		<title>By: Count Iblis</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9216</link>
		<dc:creator>Count Iblis</dc:creator>
		<pubDate>Wed, 22 Mar 2006 01:48:27 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9216</guid>
		<description>R. Plaga has published an &lt;a href=&quot;http://arxiv.org/abs/hep-ph/0603159&quot; rel=&quot;nofollow&quot;&gt;interesting paper&lt;/a&gt; in Phys. Lett. B recently, in which he applies a Tegmark &#039;&#039;quantum suicide&#039;&#039; type of reasoning to show that some of the arguments for physics beyond the standard model may be invalid.

&lt;blockquote&gt;It is shown that if - and only if - ``parallel universes&#039;&#039; exist, an electroweak vacuum that is expected to have decayed since the big bang with a high probability might exist. It would neither necessarily render our existence unlikely nor could it be observed. In this special case the observation of certain combinations of Higgs-boson and top-quark masses - for which the standard model predicts such a decay - cannot be interpreted as evidence for new physics at low energy scales. The question of whether parallel universes exist is of interest to our understanding of the standard model of particle physics.&lt;/blockquote&gt;</description>
		<content:encoded><![CDATA[<p>R. Plaga has published an <a href="http://arxiv.org/abs/hep-ph/0603159" rel="nofollow">interesting paper</a> in Phys. Lett. B recently, in which he applies a Tegmark &#8221;quantum suicide&#8221; type of reasoning to show that some of the arguments for physics beyond the standard model may be invalid.</p>
<blockquote><p>It is shown that if &#8211; and only if &#8211; &#8220;parallel universes&#8221; exist, an electroweak vacuum that is expected to have decayed since the big bang with a high probability might exist. It would neither necessarily render our existence unlikely nor could it be observed. In this special case the observation of certain combinations of Higgs-boson and top-quark masses &#8211; for which the standard model predicts such a decay &#8211; cannot be interpreted as evidence for new physics at low energy scales. The question of whether parallel universes exist is of interest to our understanding of the standard model of particle physics.</p></blockquote>
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		<title>By: onglon</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9220</link>
		<dc:creator>onglon</dc:creator>
		<pubDate>Sat, 11 Mar 2006 14:41:04 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9220</guid>
		<description>i wouldn&#039;t take the deal because i am afraid of taking risks i don&#039;t understand.</description>
		<content:encoded><![CDATA[<p>i wouldn&#8217;t take the deal because i am afraid of taking risks i don&#8217;t understand.</p>
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		<title>By: jan</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9219</link>
		<dc:creator>jan</dc:creator>
		<pubDate>Thu, 09 Mar 2006 08:57:29 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9219</guid>
		<description>depends on my situation- if i got nothing much to lose, Ill take the bet - hoping that if i can learn to surf through the universes then the banana is only the tip of the iceberg. If I can do that, then I can win the lottery, cure world-hunger, end poverty, set up a benevolent society, illuminate that which was hidden, and eventually learn to exploit quantum reality to the point that I can literally make reality do what I want by simply fast-forwarding as it were through the various universes until i get to the one i want.

i suppose.</description>
		<content:encoded><![CDATA[<p>depends on my situation- if i got nothing much to lose, Ill take the bet &#8211; hoping that if i can learn to surf through the universes then the banana is only the tip of the iceberg. If I can do that, then I can win the lottery, cure world-hunger, end poverty, set up a benevolent society, illuminate that which was hidden, and eventually learn to exploit quantum reality to the point that I can literally make reality do what I want by simply fast-forwarding as it were through the various universes until i get to the one i want.</p>
<p>i suppose.</p>
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		<title>By: Mr. Bean</title>
		<link>http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/comment-page-1/#comment-9218</link>
		<dc:creator>Mr. Bean</dc:creator>
		<pubDate>Mon, 06 Mar 2006 05:36:57 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/cosmicvariance/2005/12/30/thought-experiments/#comment-9218</guid>
		<description>I&#039;d buy a banana with the coin.</description>
		<content:encoded><![CDATA[<p>I&#8217;d buy a banana with the coin.</p>
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