The CAS50 Exhibition celebrates 50 years of the Computer Arts Society

It includes a print by Stephen Bell titled The Gathering based on a still frame from this animation:

More of Bell's behavioural work can be seen here

The animation is intentionally slow so that you have time to focus your attention on different parts of each frame's composition.

"I have found that the way we interact with these images has an effect on our perception of their possible size. As there is no scale in the pieces apart from how we imagine it to be we may choose to interpret the forms as vast or as microscopic. If we scrub back and forth quickly it appears that the thing we are looking at is easily manipulable and hence must be of a small enough to hold. If however it takes time to change our view it implies that what we are looking at is too large to manipulate so instead we have to move relative to it to get a different view and it becomes more like exploring an architecture or landscape. As we are not actually moving we may also imagine that we are looking at something so small that we need to use an instrument like a microscope to see it."

By choosing slow as the default way of showing the work, Bell is drawing attention to the potential of a particular way of looking at the moving image. You are encouraged to scrub back and forth through the recording rather than just watching it, although that can be just as rewarding.