The conventional wisdom is that economic mobility in the US is dismal. What do we hear? Jobs are disappearing. We're falling behind our peers in the world. And so on. But if you listen closely to those working toward the middle class, you'll likely hear a different story. It's a story colored with optimism and possibility. It's a story that includes entry ramps into professions like nursing, welding, and franchising. It's a story, as Tamar Jacoby reports in the WSJ, about a growing group of people that are quietly reinventing upward mobility in America.