A big question was answered during the CNN interview of Vice President Kamala Harris and her running mate Minnesota Governor Tim Walz. Viewers saw for themselves why the Democratic standard-bearers did not rush to do such an interview earlier. This message came through loud and clear not because Harris and Walz were in any way challenged by the questioning they faced from CNN’s Dana Bash. Quite the contrary, they handled all of them with flying colors. But rather the insipidity and formulaic...