"On the margins of their consciousness"

Wretchard of The Belmont Club writes:

I suspect that in the minds of many, the question will be begged. A large percentage of public policy debates are determined not by winning intellectual arguments but by forming attitudes. A friend of mine wrote in a private email that many people in his San Francisco office don't even think about the War on Terror or the fact that America hasn't been attacked by 9/11. All that is a hum on a distant planet; something on the margins of their consciousness. Arguments invoking the numbers of Iraqi Government divisions, the Anbar Awakening, etc might as well be a recitation of track lengths in a obscure railroad. A certain percentage of people have made their minds up. 'America has lost. The TV says so. And besides, so what?'