Visitors mingle around Light Drift by Professor of Architecture J. Meejin Yoon. The color-changing orbs encouraged people to interact with each other and with the river, as touching the orbs on land affected the colors of the orbs in the water. Nicholas Chornay—The Tech May. 9, 2016 Facebook Twitter Reddit Print Visitors mingle around Light Drift by Professor of Architecture J. Meejin Yoon. The color-changing orbs encouraged people to interact with each other and with the river, as touching the orbs on land affected the colors of the orbs in the water. Nicholas Chornay—The Tech