Households Weaken Their Gingerbread Roofs to Avoid the Open Division: Bunching Below a P&C Fete's Four-Level Gingerbread Structural Maturity Model, and the Silent-Auction Promotion It TriggersResolving to Households Weaken Their Gingerbread Roofs to Avoid the Open Division: Bunching Below a P&C Fete's Four-Level Gingerbread Structural Maturity Model, and the Silent-Auction Promotion It Triggers…