<prompt> Translate the following text to EnglishJinsi gani mwanahistoria wa uchumi wa hali ya juu kama Greenspan angeweza kuchanganyikiwa katika maswali muhimu kama hayo kwa njia isiyo na hali ya juu?  <response>: How could an economist of Greenspans sophistication fumble such important questions in such an unsophisticated manner? 