Our many-part analysis of “The Force Awakens” continues. In this episode we praise the casting of Daisy Ridley, John Boyega, and Oscar Isaac, and ponder how the diversity of the “Star Wars” universe has increased. Plus, did Luke hide something in all the droids? Why does Finn hold a lightsaber like a baseball bat? Why would one of the Weasley brothers become a fascist? And ultimately, why is this film redemptive for the franchise as a whole?