text: Economists are as guilty of this hubris as are members of any There 's the Fischer Effect , the Sharpe Ratio , the Miller-Modigliani Theorem , Tobin 's Q , the Laffer Curve ( the only one in which the name helps characterize the discovery ) , and the greatest of them all , Pareto Optimality .
  
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  Economists think they know everything because they have a degree .