 
 <prompt> Wetin be di name of di economist wey born for Vienna wey contribute well well to di field of economics? Given di last question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Arthur M. Diamond dey argue say Hayek get wahala wen e dey go pass claims we fit dey evaluate inside economic science. Diamond argue say: "The human mind, Hayek talk say, no just dey limited for im ability to synthesize plenty plenty concrete facts, e still dey limited for im ability to give a deductively sound ground to ethics. Na here tension dey start, because e still wan give reasoned moral defense of the free market. E be like say e dey doubt and e still wan give political philosophy solid intellectual foundation. Na so e no too surprising say wetin dey come out na confusion and contradiction." 