Reporter Melinda Henneberger writes about the touching realism of the Broadway play, "Lucky Guy," about the late tabloid columnist Mike McAlary, and what it says about the value of print journalism. "There is no substitute for knocking on doors. There is no substitute for taking tips seriously. And just like democracy itself is, as Churchill said, the worst form of government except for all those others that have been tried, the press you’ve got is worse than anything except the press you soon might not have." Photo: New York Daily News photo of the real Mike McAlary and his wife Alice McAlary in the newsroom on the day he won a Pulitzer for the paper in 1998, a scene recreated play.