Traci is the warehouse manager for a company that sells books over the Internet. Traci alternates employees' work assignments among order printing, order picking, packaging and inventory taking. Lately, Traci has observed warehouse employees bickering over their assignments. Traci determines that the accuracy and timeliness of the order filling is unaffected, so she decides to do nothing about the bickering. Traci is using the conflict resolution technique of ________.