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Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

To be more specific, 47 is (or was originally) the Pomona College Math department magic number. The derivation, heretofore known only to the initiated, is partially revealed here. Math professors in good humor would, on occassion, award partial credit for an answer of "47" on math quizes. I once availed myself of this on one of Professor Bentley's exams.

The correct link for the above reply is Here