Chuck Marohn interviews Don Kostelec, a Strong Towns member and Senior Planning Associate at\xa0Alta Planning + Design\xa0based in Boise, ID. He's also the creator of\xa0this awesome video series.\nChuck and Don discuss a deadly street in Springfield, MA. (Read\xa0Chuck's open letter to the city of Springfield\xa0and\xa0the follow-up article\xa0for more back story.) They also chat about the challenges of the engineering and planning professions in general, and the nuance necessary in examining car crash data.