The Navy needs more ships, Mitt Romney said in last Monday's debate. It has fewer now than in 1916. President Barack Obama pounced. "Well, governor, we also have fewer horses and bayonets, because the nature of our military's changed," he said, his voice dripping with sarcasm. "We have these things called aircraft carriers where planes land on them ... " In the spin room, some journalists laughed and applauded. Liberals imagine themselves to be intellectually and morally superior to conservatives. They love to put them down. But "sarcasm and condescension only work if the speaker's presumption of lofty superior knowledge...