The speech vice-presidential candidate Paul Ryan delivered this morning gives a sense of the quality you get from being in a room with him: He’s not a fire-breather. He’s unflappable and unadorned, combining plain-spokenness with almost offhanded rhetorical hints of the deeper philosophy undergirding his opinions (“our rights are from nature and God, not from government”). This wasn’t a populist spark-plug of a speech the way Sarah Palin’s dazzling out-of-nowhere introduction to America was in 2008; it was a calm elaboration of themes already articulated by the Romney campaign. Most important, he and Romney both spoke of saving Medicare, indicating that they have already thought long and hard about the attack that will be waged against them because Ryan’s famous budget changes the structure of Medicare for everybody under 55. The line being proffered before the speech was that Mitt Romney had chosen a vice-presidential candidate who will effectively become the presidential candidate because Romney has no ideas and Ryan has a million. That is a fundamental misunderstanding of the game going forward. Romney is the candidate, and he will pick and choose from Ryan’s ideas at will; it is Ryan who will have to say, as George H.W. Bush said, that he understands his ideas have been superseded by his boss’s. Remember, he’s voted many times for legislation he presumably didn’t really like (Medicare Part D, TARP, the auto bailout) because of political necessity.