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Changing that situation will , once again , require innovation . This allows your website 's viewers to get to the location using the virtual host URL , but still access the protected files within the site , however , once they get into the protected files , the real location of the site becomes visible in their URL lines on their browsers as http://www.its.caltech.edu/~username/ ... It is an imaginary being who comes to life in language and , once having done so , cannot be eliminated from language . As the district court itself recognized , a library 's authority to collect material from the Internet cannot be distinguished from its authority to collect books on the ground that , once a library connects to the Internet , a library does not incur additional cost by offering additional material . Moreover , once found , critically appraising , and determining the usefulness of safety-operations research is a daunting task .