If you know anything of substance about Paul Ryan, it's that the Republican vice presidential pick knows his numbers. A Washington Post profile today by Michael Leahy (8/20/12) tells us: He got his start on Capitol Hill as a 19-year-old intern working in the mailroom of Sen. Bob Kasten (R-Wis.). That led in time to positions on congressional committees and habits he hasn't broken since, including a staffer's zeal for voracious research, for charts and PowerPoint presentations, and a facility for budget numbers that he recites with a savant's glee. As if that weren't clear enough, we're told later that [...]