Nearly four years into the war in Iraq, local sales representative Howard Morrison finally conceded that it was probably time to just pick up a newspaper and figure out what distinguishes Sunni Muslims from Shiite Muslims. 'At first I really thought this whole thing would work itself out, and there was no need to figure out who was who,' said Morrision, adding that it used to be enough to know the difference between Iraq and Iran. 'But this is turning out to be pretty complicated and I should at least learn which side are the insurgents. I know one of them's Islamic.' Morrison said he would have time for the new subject since giving up trying to learn the difference between trans fats and regular fats last week. 