Economics and Search H a l R . Varian* School of I n f o r m a t i o n M a n a g e m e n t & Systems University of California at Berkeley Berkeley, CA 94270-4600 halOsims, berkeley, edu They say t h a t economists are people who are good with numbers but d o n ' t have the personality to become accountants. I want to belie t h a t m i l d - m a n n e r e d image by doing something rash and even downright dangerous: I want to talk to you a b o u t some work in my subject, economics, t h a t I think might be relevant to the work in your subject, information retrieval. I take this step with considerable trepidation, since I know t h a t it is unlikely to be successful. It is rare t h a t an outsider can really contribute a n y t h i n g useful to another subject, as I know from listening to innumerable speeches by the physicists, biologists, and m a t h e m
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