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  <title><![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]></title>
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  <description><![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]></description>
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  <original_publication_year type="integer">1973</original_publication_year>
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    <![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]>
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  <average_rating>4.22</average_rating>
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    <![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]>
  </description>
  <published>1973</published>
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  <recommended_for><![CDATA[Those with interests in military history, game theory, math, linguistics.]]></recommended_for>
  <recommended_by><![CDATA[]]></recommended_by>
  <read_at>Wed Aug 01 00:00:00 -0700 2007</read_at>
  <date_added>Thu Oct 11 06:54:41 -0700 2007</date_added>
  <date_updated>Tue Oct 23 09:54:15 -0700 2007</date_updated>
  <read_count></read_count>
    <body><![CDATA[This book contains some fascinating material.  The opeining chapter is particularly gripping, dealing with the decryption of the Japanese diplomatic service's codes and ciphers during the run up to Pearl Harbor.  The main plotline of the book follows the development of cryptology from antiquity up t...<a href="http://www.goodreads.com/review/show/7574959">more...</a>]]></body>
    
  <url><![CDATA[http://www.goodreads.com/review/show/7574959]]></url>
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      <review>
  <id>39962634</id>
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  <title>
    <![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]>
  </title>
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  <average_rating>4.15</average_rating>
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  <description>
    <![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]>
  </description>
  <published>1973</published>
</book>

    <rating>5</rating>
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  <recommended_by><![CDATA[]]></recommended_by>
  <read_at>Wed Jan 01 00:00:00 -0800 2003</read_at>
  <date_added>Fri Dec 12 12:53:02 -0800 2008</date_added>
  <date_updated>Fri Dec 12 12:54:25 -0800 2008</date_updated>
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    <body><![CDATA[A great history about codes.  If you like puzzles, historical analysis, or strategy, this is definitely a book for you to read.  ]]></body>
    
  <url><![CDATA[http://www.goodreads.com/review/show/39962634]]></url>
  <link><![CDATA[http://www.goodreads.com/review/show/39962634]]></link>
</review>
      <review>
  <id>2468720</id>
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    <id>158089</id>
    <name><![CDATA[Jonathan]]></name>
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  <title>
    <![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]>
  </title>
  <image_url>http://photo.goodreads.com/books/1168034461m/29608.jpg</image_url>
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  <average_rating>4.15</average_rating>
  <ratings_count>62</ratings_count>
  <description>
    <![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]>
  </description>
  <published>1973</published>
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  <date_added>Wed Jun 27 19:53:08 -0700 2007</date_added>
  <date_updated>Wed Jun 27 19:54:44 -0700 2007</date_updated>
  <read_count></read_count>
    <body><![CDATA[been very interesting thus far...i think cryptology is really cool.  this is on the history side, there is very little math in it, but that's okay.  there is actually a very rich history in cryptology that came into bloom during the late 1500s to early 1600s, and is still being pioneered even today ...<a href="http://www.goodreads.com/review/show/2468720">more...</a>]]></body>
    
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      <review>
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  <title>
    <![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]>
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  <link>http://www.goodreads.com/book/show/29608.The_Codebreakers_The_Comprehensive_History_of_Secret_Communication_from_Ancient_Times_to_the_Internet</link>
  <average_rating>4.15</average_rating>
  <ratings_count>62</ratings_count>
  <description>
    <![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]>
  </description>
  <published>1973</published>
</book>

    <rating>4</rating>
  <votes>0</votes>
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  <read_at>Sat Apr 01 00:00:00 -0800 2000</read_at>
  <date_added>Sun Mar 23 01:14:45 -0700 2008</date_added>
  <date_updated>Sun Mar 23 01:15:14 -0700 2008</date_updated>
  <read_count></read_count>
    <body><![CDATA[Fairly authoritative and certainly broad in scope.]]></body>
    
  <url><![CDATA[http://www.goodreads.com/review/show/18426609]]></url>
  <link><![CDATA[http://www.goodreads.com/review/show/18426609]]></link>
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      <review>
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    <name><![CDATA[Robert]]></name>
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    <![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]>
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  <average_rating>4.15</average_rating>
  <ratings_count>62</ratings_count>
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    <![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]>
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  <published>1973</published>
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  <url><![CDATA[http://www.goodreads.com/review/show/81717485]]></url>
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    <name><![CDATA[Lou]]></name>
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    <![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]>
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    <![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]>
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  <date_added>Mon Dec 21 13:46:09 -0800 2009</date_added>
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    <![CDATA[The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet]]>
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  <average_rating>4.15</average_rating>
  <ratings_count>62</ratings_count>
  <description>
    <![CDATA[&quot;Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break,&quot; writes David Kahn in this massive (almost 1,200 pages) volume. Most of <em>The Codebreakers</em> focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology's origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for &quot;messages&quot; from outer space. He concludes with a few thoughts about encryption on the Internet.  ]]>
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  <published>1973</published>
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  <date_added>Tue Dec 01 05:00:43 -0800 2009</date_added>
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