Michelle Obama/Sarah Palin: Cool/Hot

Last night's debate showed a contrast between two men of different generations, speaking styles and body language. Tonight the TV screens offered disparity of another gender, between Michelle Obama with Larry King and Jon Stewart, and Sarah Palin out on the stump with John McCain.

Comparing these 21st century women calls up the distinction Marshall McLuhan made in the early days of TV between cool and hot personalities, citing the differences between JFK and Nixon.

Palin's hotness is not erotic but, in McLuhanese, an aggressive style that works on the listener to get a pre-determined reaction that leaves no room for ambivalence or ambiguity, eliciting primal responses such as "Kill him" to her attacks on Barack Obama.

Little wonder that conservative David Brooks calls her "a cancer on the Republican Party" out of a populist tradition with prejudices that "scorn ideas entirely."

Michelle Obama, on the other hand, is the essence of cool, shrugging off McCain's calling her husband "that one" as part of the political game and just smiling when Jon Stewart tried to get a rise out of her about Palin.

Cool media and personalities, McLuhan asserted, are inclusive, inviting watchers into their world instead of manipulating them to their own purposes. If the Obamas get to the White House, they could turn out to be the coolest couple since JFK and Jackie.