Grab and drag the largest tile in each propagating set. The effects of interaction transfer to the connected tiles with some small amount of delay. Over time, this delay imposes a kind of continuous damping effect, measurable by the movement of tiles within each set.   figure A. an unusually long tile chain shows how the user's input is much like a wave carrying force information Controls such as these provide an easy way to sample user interaction under a natural limiting system. For varying degrees of dampening and responsiveness, the system could sample input anywhere along the connected tile control.           jtarbell January 7, 2001