Whirling comes from an early experiment with the equipment used in Binocular Vision-two video cameras mounted together and pointed so they would join in a two channel projection. The two cameras were mounted on the end of a twelve-foot pole, this "binocular pole cam" was raised in the air and whirled. The matched clips were then put together, a looping point was found, and for each of four loops in the middle of the video the speed of one side is different from the speed in the other. Only at two points, once at the beginning and once at the end, are the two clips synchronized, and then it is only momentarily as their different speeds cross.