A young man boards a train for Washington, holding a plan he truly believes can make this country great again. This isn't a scene from a Frank Capra movie. It's real life. He is 24 years old, and hell-bent on reforming Social Security. He never finished college, but has a formidably thorough understanding of government trust funds, effective interest rates, complex financial models and other components of the tangled maze of Social Security. What's even more unusual — people are starting to listen.