Playwright Gregory S. Moss caught Chicago&rsquo;s attention when &ldquo;punkplay,&rdquo; produced by Pavement Group, was the sleeper hit of Steppenwolf&rsquo;s Garage Rep last spring. Moss returns to Chicago theater with the Midwest premiere of &ldquo;The Argument,&rdquo; a play loosely based on Katrina&rsquo;s aftermath. We spoke with Moss on the oddly appropriate day of September 11 about [...]