Post-Slade, I continued to develop an interest in participatory art. The three images above show the initial arrangement of the elements comprising the piece, with instructions on how to manipulate them and, in the final image, a solution terminating the interaction cycle. Multiple arrangements of the elements within a closed boundary are possible, e.g., see the arrangement below.

Whereas in Fifteen an interaction cycle was closed when the system was 'satisfied', in Sixteen it was closed when the participant was satisfied with the result.

The algorithm governing Sixteen placed numbers between 1 and 16 in a 20 by 20 matrix. Any value assigned 0 would not be assigned to a matrix cell. For example, if the values 1, 2, and 3 was each assigned a weight of 0, then none would appear in matrix and, hence, the screen representation of it. All values given a weight between 1 and 100 would be assigned to the matrix according to their relative weights.

Imagine the value 4 is assigned a weight of 25 and 7 a weight of 100, then the matrix would only be filled with these values, with the value 7 likely to occur four times more frequently than the value 4.

A second version of Sixteen (see the image above) allowed participants to iteratively define a rectangular region of the matrix and assign a different set of values (or visual elements) distributed according to a different set of weights. See the image above where an initial distribution of elements over the whole matrix has been first overwritten with a new distribution in an upper left rectangle and then overwritten again with a new distribution in a central rectangle.