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	<title>depth first search &#187; Uncategorized</title>
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	<link>http://www.depthfirstsearch.net/blog</link>
	<description>“We can only see a short distance ahead, but we can see plenty there that needs to be done.&#34;</description>
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		<title>Saturday Matinée</title>
		<link>http://www.depthfirstsearch.net/blog/2010/07/24/saturday-matinee-3/</link>
		<comments>http://www.depthfirstsearch.net/blog/2010/07/24/saturday-matinee-3/#comments</comments>
		<pubDate>Sat, 24 Jul 2010 04:43:58 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/blog/?p=2232</guid>
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		<title>Saturday Matinée</title>
		<link>http://www.depthfirstsearch.net/blog/2010/07/10/saturday-matinee/</link>
		<comments>http://www.depthfirstsearch.net/blog/2010/07/10/saturday-matinee/#comments</comments>
		<pubDate>Sat, 10 Jul 2010 10:00:26 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/blog/?p=2215</guid>
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		<title>Martians and the Gruesome</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/24/martians-and-the-gruesome/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/24/martians-and-the-gruesome/#comments</comments>
		<pubDate>Wed, 24 Jan 2007 16:11:38 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=226</guid>
		<description><![CDATA[This is an interesting read. I can&#8217;t pretend to have parsed the entire argument. I will note that the author subtly assumes a kind of elevated status for psychological explanations. Unless you accept some kind of divine influence, say a soul, the psychology of a situation is merely a computational relationship we simply don&#8217;t understand [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://crookedtimber.org/2007/01/23/martians-and-the-gruesome/">This</a> is an interesting read. I can&#8217;t pretend to have parsed the entire argument. I will note that the author subtly assumes a kind of elevated  status for psychological explanations.</p>
<p>Unless you accept some kind of divine influence, say a soul, the psychology of a situation is merely a computational relationship we simply don&#8217;t understand yet. My intuition is that this view renders the point of the whole article moot.</p>
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		<title>Crack Attack!</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/23/crack-attack/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/23/crack-attack/#comments</comments>
		<pubDate>Tue, 23 Jan 2007 21:13:14 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=225</guid>
		<description><![CDATA[I&#8217;ve heard rumors that Blu-ray DRM is now broken as well. I don&#8217;t know much about the specifics of the crack except for the typical colloquial explanation that the keys for decrypting the data were pulled out of memory. I can only surmise that since decrypting such massive amounts of video data in real time [...]]]></description>
			<content:encoded><![CDATA[<p>I&#8217;ve heard <a href="http://www.theregister.co.uk/2007/01/23/blu-ray_drm_cracked/">rumors</a> that Blu-ray DRM is now broken as well.</p>
<p>I don&#8217;t know much about the specifics of the crack except for the typical colloquial explanation that the keys for decrypting the data were pulled out of memory. I can only surmise that since decrypting such massive amounts of video data in real time necessitates that programs be highly optimized. What would should optimized decryption code do? Keep the key in cache. Since the rest of the cache data is constantly changing as new frames of data are decoded, identifying static memory locations during video playback may sufficiently winnow down the number of possible key locations in memory.</p>
<p>I&#8217;m guessing this is the case, and if it is, we have the unique situation where optimization defeats DRM by limiting opportunities for key obfuscation. Of course even with faster resources, obfuscation methods (which all DRM schemes boil down to) aren&#8217;t a panacea. They will just signal the continued arms race between open and closed source developers.</p>
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		<item>
		<title>Today&#039;s Misc.</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/23/todays-misc-24/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/23/todays-misc-24/#comments</comments>
		<pubDate>Tue, 23 Jan 2007 05:26:57 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=224</guid>
		<description><![CDATA[Tupper&#8217;s Self-Referential Formula. [via GeekPress] Yes, but how many self-referential formulas are there?]]></description>
			<content:encoded><![CDATA[<p><a href="http://mathworld.wolfram.com/TuppersSelf-ReferentialFormula.html">Tupper&#8217;s Self-Referential Formula</a>. [via <a href="http://geekpress.com/">GeekPress</a>]</p>
<p>Yes, but how many self-referential formulas are there?</p>
]]></content:encoded>
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		<title>To Sell Oneself</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/22/to-sell-oneself/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/22/to-sell-oneself/#comments</comments>
		<pubDate>Mon, 22 Jan 2007 21:02:30 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=223</guid>
		<description><![CDATA[Perhaps my least favorite task is putting together my resume. This most recent iteration of pain is directed towards finding a summer internship. That&#8217;s one of the few problems with the Ph.D. program here at UT. It promotes a kind of journeyman mentality, a regular migration of the minds. Summer money is in short supply [...]]]></description>
			<content:encoded><![CDATA[<p>Perhaps my least favorite task is putting together my resume. This most recent iteration of pain is directed towards finding a summer internship. That&#8217;s one of the few problems with the Ph.D. program here at UT. It promotes a kind of journeyman mentality, a regular migration of the minds. Summer money is in short supply (must be inversely proportional to heat).</p>
]]></content:encoded>
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		<item>
		<title>Melting Ice</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/19/melting-ice/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/19/melting-ice/#comments</comments>
		<pubDate>Fri, 19 Jan 2007 20:03:17 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=222</guid>
		<description><![CDATA[While walking under rows of trees that were hazardously emitting chunks of ice yesterday I thought of the following problem: What is the likelihood of my being hit in the head by ice as I travel under the trees?]]></description>
			<content:encoded><![CDATA[<p>While walking under rows of trees that were hazardously emitting chunks of ice yesterday I thought of the following problem: What is the likelihood of my being hit in the head by ice as I travel under the trees?</p>
<p><a class="imagelink" href="http://www.depthfirstsearch.net/blog/wp-content/uploads/2007/01/tree.png" title="tree"><img id="image221" src="http://www.depthfirstsearch.net/wp-content/uploads/2007/01/tree.thumbnail.png" alt="tree" /></a></p>
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		<title>Today&#039;s Misc.</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/19/todays-misc-23/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/19/todays-misc-23/#comments</comments>
		<pubDate>Fri, 19 Jan 2007 19:30:15 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=220</guid>
		<description><![CDATA[I&#8217;ve had the equivalent of three coffees and I still can&#8217;t unpack the multiple implications of this. It&#8217;s like taking parody and making it recursive.]]></description>
			<content:encoded><![CDATA[<p>I&#8217;ve had the equivalent of three coffees and I still can&#8217;t unpack the multiple implications of <a href="http://www.washingtonpost.com/wp-dyn/content/article/2007/01/19/AR2007011900364.html">this</a>. It&#8217;s like taking parody and making it recursive.</p>
]]></content:encoded>
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		</item>
		<item>
		<title>Today&#039;s Misc.</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/17/todays-misc-22/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/17/todays-misc-22/#comments</comments>
		<pubDate>Wed, 17 Jan 2007 07:04:15 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=219</guid>
		<description><![CDATA[Some fatherly advice for getting back into the swing of things after the holidays: Start slow then taper. Also, The Prime Directive is Stupid. While the ethics of obligations is a very tricky thing, it is often through our inaction that we cause the most harm. Injunctions against playing God begs the question: if we [...]]]></description>
			<content:encoded><![CDATA[<p>Some fatherly advice for getting back into the swing of things after the holidays:<br />
<blockquote>Start slow then taper.</p></blockquote>
<p>Also, <a href="http://sentientdevelopments.blogspot.com/2007/01/star-treks-prime-directive-is-stupid_13.html">The Prime Directive is Stupid</a>.</p>
<blockquote><p>
While the ethics of obligations is a very tricky thing, it is often through our inaction that we cause the most harm. Injunctions against playing God begs the question: if we don&#8217;t play God, who will?</p></blockquote>
<p>Um, no one?</p>
]]></content:encoded>
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		<title>Kubuntu</title>
		<link>http://www.depthfirstsearch.net/blog/2007/01/16/kubuntu/</link>
		<comments>http://www.depthfirstsearch.net/blog/2007/01/16/kubuntu/#comments</comments>
		<pubDate>Wed, 17 Jan 2007 02:16:26 +0000</pubDate>
		<dc:creator>JS</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://www.depthfirstsearch.net/?p=218</guid>
		<description><![CDATA[In light of continuing problems configuring my internet connection with Mandriva (a result of the ill-planned wireless fiasco), I&#8217;ve decided to take a sledgehammer to the problem and switch to Kubuntu. This, by the way, is considered trendy in some circles. For others this is merely the action of a habitual poseur. My internet, however, [...]]]></description>
			<content:encoded><![CDATA[<p>In light of continuing problems configuring my internet connection with Mandriva (a result of the ill-planned <em>wireless fiasco</em>), I&#8217;ve decided to take a sledgehammer to the problem and switch to Kubuntu.</p>
<p>This, by the way, is considered trendy in some circles. For others this is merely the action of a habitual <em>poseur</em>.</p>
<p>My internet, however, now works.</p>
]]></content:encoded>
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