Rather than asking , " Would you favor a flat tax rate ? " or " Do you propose to provide universal health coverage , and if so , how ? " or " Do you have a plan for extricating us from Iraq without further destabilizing the Middle East ? , " Couric will ask , " When was the last time you lost your temper " ( a question Lyndon Johnson could have answered , " When was the last time I didn 't ? " ) or " Who is the single most impressive person you 've ever met " ( watch out ; you may be endorsing someone other than yourself ) or " What 's the biggest mistake you 've ever made ? " ( doing this interview ) or " Besides your family , what are you most afraid of losing ? " ( the nomination and election ) .