People have to hear it from several people about how things are different now , and then they change their minds , '' said Robert J. Shiller , the author of '' Irrational Exuberance '' -LRB- Princeton University Press ; second edition , 2005 -RRB- and a professor of economics at Yale University .
Robert J. Shiller /business/person/company Yale University
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Robert J. Shiller
PERSON
Yale University
ORGANIZATION
/business/person/company