The densely packed ovoids of light, standing in the Eucalyptus park, are autonomous. When an ovoid is pushed over by people moving through or blown down by the wind, it rises back up as the color of its light changes and emits a tone specific to that color. The surrounding ovoids respond one after another, resonating and emitting the same tone and light color.
When the wind is not blowing and the people nearby are not interacting with the ovoids, their lights begin to blink slowly.

If a wave of light comes from the other side, it signifies the presence of people there. People gain a heightened sense of awareness of the existence of other people in the same space.