A computer determines the direction in which the robot flock moves. The fine tuning is undertaken by on-board computers hidden beneath their artificial skin. All these computers are linked by radio in one network. The mobile objects use sensors to touch their surroundings and react independently of one another to obstacles in their way. It is in this manner that the visitors' behaviour determines the movements of the robot flock.The central control computer instructs the capsules to form sub-groups. If visitors bustle about in their vicinity, the flock moves closer together. If the visitors form chains, the robots attempt to move through them, to "have their own way" and push themselves slowly through the rows. If the visitors keep their distance, the robots group together.
The robots' reactions are stored in the computer memory and are used to direct their movements the following day. During the course of EXPO, the robots "learn" how to perform their tasks more quickly.
