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This bubble is like a microcosm of the " real world " , in this case the real world being the operating system environment where Perl scripts are normally executed . " For now though , let 's just use this example to find out whether there are more instances of the string , " read " , in this Help file . It ultimately does not matter if Bush says he gets " darned good intelligence " , because this episode , combined with the widespread critiques of the CIA and the Federal Bureau of Investigation before September 11 and the unjustified optimism concerning Iraq , casts a baleful light over the whole process by which information is first collected , then analyzed , then assessed , and then used in policymaking . The reuqest for " substantive proposals " , in this context , was clearly not an invitation to bargain . We could force perl to use the variable $ num by putting curly braces around the variable name : " The result is $ { num } ber " , in this case the resulting string would be " The result is 17ber " .