In Which I Go to a Dance Parade and Reflect on Happiness.

This Saturday, my husband suggested that we all go downtown to watch the annual dance parade. I'd never heard of it, but for the past three years, New York City has had a dance parade, where thousand of dancers, from all sorts of dance organizations, dance their way down a parade route. Some of the dancers were from "real" dance schools or groups, others were from dance/exercise classes, and many groups, we suspected, had been organized for the sole purpose of marching on Saturday.

This...