Meet Paul Ryan and Chris Christie, the GOP’s dynamic and dangerous duo. One is the author of “A Roadmap for America’s Future,” a bold blueprint that shows policymakers how they can shrink entitlement spending while also growing the economy. The other is the Garden State’s chief executive and YouTube sensation who’s implementing his own roadmap in a blue state drowning in red ink. Both are fighting back hard against the idea that government spending can’t be cut and thus taxes must be raised in order restore America’s long-term fiscal solvency.