A little boy travels on the Commuter Train to Boston with me most mornings. He's about 4 years old and hard to miss once he hits the platform. The toy Thomas trains clutched in each hand (usually James and Percy) are as distinctive as his exuberant little jog. He also has a kind of barely contained energy that convinces you that the only reason he doesn't flat out sprint, is the inconvenient office throng crimping his style. He makes up by percolating between people as Dad does an erratic jog to keep up.