Bursts of light attract the attention of four one-year-old children seated around a table. The light is appealing because it is random enough for the children to wonder if they are causing its movement. If only one light spot went back and forth, the children could easily predict that they are not making the light patterns happen. If it were a single laser light randomly moving around the table, it might not inspire the same sense of group glee. The light is varied to include bursts, along with an occasional light spot that moves slowly across the surface of the table as an invitation for the children to try to catch it. The table is white, thereby causing the light to be highly visible. The visual effect would likely not be as great on a dark colored or wooden surface. The square shape of the table provides each child with an edge, giving the children a sense of responsibility for the light in their quadrant. Because the white light resembles the effect of light on the water’s surface, it may encourage the children to think they can splash it. If the light were multiple colors, the children might simply watch it like fireworks.