He has never deviated from his much-quoted formulation in “The Audacity of Hope,” where he described himself as aloof from “the psychodrama of the baby boom generation” with its “old grudges and revenge plots hatched on a handful of college campuses long ago.” His vocabulary is so different from that of Mrs. Clinton and Mr. McCain that they often find it as baffling as a foreign language, even as they try to rip it off.

The selling point of Mr. Obama’s vision of change is not doctrinaire liberalism or Bush-bashing but an inclusiveness that he believes can start to relieve Washington’s gridlock much as it animated his campaign. Some of that inclusiveness is racial, ethnic and generational, in the casual, what’s-the-big-deal manner of post-boomer Americans already swimming in our country’s rapidly expanding demographic pool. Some of it is post-partisan: he acknowledges that Republicans, Ronald Reagan included, can have ideas.

Opponents who dismiss this as wussy naïveté do so at their own risk. They at once call attention to the expiring shelf life of their own Clinton-Bush-vintage panaceas and lull themselves into underestimating Mr. Obama’s political killer instincts.

The Obama forces out-organized the most ruthless machine in Democratic politics because the medium of their campaign mirrored its inclusive message. They empowered adherents in every state rather than depending on a Beltway campaign hierarchy whose mercenary chief strategist kept his day job as chief executive for a corporate P.R. giant. Such viral organization and fund-raising is a seamless fit with bottom-up democracy as it is increasingly practiced in the Facebook-YouTube era, not merely by Americans and not merely by the young.

You could learn a ton about the Clinton campaign’s cultural tone-deafness from its stodgy generic Web site. A similar torpor afflicts JohnMcCain.com, which last week gave its graphics a face-lift that unabashedly mimics BarackObama.com and devoted prime home page real estate to hawking “McCain Golf Gear.” (No joke.) The blogs, video and social networking are static and sparse, the apt reflection of a candidate who repeatedly invokes “I” as he boasts of his humility.

Mr. Obama’s deep-rooted worldliness  in philosophy as well as itinerant background  is his other crucial departure from the McCain template. As more and more Americans feel the pain of spiraling gas prices and lost jobs, they are also coming to recognize, as Mr. Obama does, that the globally reviled American image forged by an endless war in Iraq and its accompanying torture scandals is inflicting economic as well as foreign-policy havoc.

Image Credit... Barry Blitt

Six out of 10 Americans do want their president to talk to Iran’s president, according to the most-recent Gallup poll. Americans are sick of a national identity defined by arrogant saber-rattling abroad and manipulative fear-mongering at home. Mr. Obama closed his speech on Tuesday by telling Americans they “don’t deserve” another election “that’s governed by fear.” Of the three candidates, he was the only one who did not mention 9/11 that night.