What we know and still want to know about Purdue football halfway through fall camp

Have playmakers started showing up on offense? Will experience on defense make a difference? Does Purdue have a No. 2 quarterback? IndyStar Purdue insider Nathan Baird and the Journal & Courier's Sam King answer each other's pressing questions halfway through preseason camp. For the best Purdue sports coverage, sign up for IndyStar's Boilermakers newsletter .