Why do you write? Or, rather, how do you write? This week, hosts Bridget Quinn and Larry Rosen address these issues, landing on questions of motivation, ambition and outcome as they share their respective “state-of-the-writer” stories. This episode closes with a pair of unexpected twists: we’re proposing a 500-word-a-day “GrottoPod Challenge” — and we bring you a new track from our house band, Sugartown.