3-g22 moving or positioning a basketball to gain advantage is considered actively controlling. examples are carrying (holding basketballs in the robot), herding (intentionally pushing or impelling basketballs to a desired location or direction) and trapping (pressing one or more basketballs against a court element in an attempt to shield them). examples of basketball interaction that are not actively controlling are bulldozing (inadvertently coming in contact with basketballs that happen to be in the path of the robot as it drives down the court) and deflecting (being hit by a propelled basketball that bounces or rolls off the robot). a basketball that becomes unintentionally lodged on a robot will be considered controlled by the robot. it is important to design your robot so that it is impossible to inadvertently or intentionally control more than three basketballs at a time.