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1999
� �Six Degrees of Kevin Bacon�
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Theory:� �Any two randomly chosen Web
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pages
are, on average, 19 clicks away from
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each
other.�� This was taken as a measure
of
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the
�diameter� of the Web�
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2000
� The Bow Tie Theory says it�s much
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more
complicated�
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And then there�s The Invisible Web�
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