For eight weeks, FX is airing Fosse/Verdon, a limited series about iconic choreographer/director Bob Fosse and legendary dancer Gwen Verdon, his wife and creative partner. Besides being catnip for theater fans, their story raises thoughts and questions about love, art, sacrifice, exploitation, abuse, and other topics that are both timely and timeless. This series explores both the aesthetic aspects of the show and its handling of those topics. “Providence” is the only episode of Fosse/Verdon that’s not named after a song from…