Rapprochement is a computer-coordinated kinetic sculpture that uses an ultrasonic rangefinder to sense the proximity of visitors. When activated, motors slowly grind two brick fragments against one another, turning at times in opposite directions, and sometimes in the same direction. The bricks engage each other in a process of mutual accommodation. The version of Rapprochement shown at ISEA2015 uses brick pieces from Berlin, Germany; one originates from the East, one from the West.