Tentative idea about the beginning of the Bright Way
Another tentative idea: After the Theophany, a movement grows within the interstitial teens. The miraculous light appeared low in the southern sky, at a much lower elevation than the equatorial sun was known to travel. The majority of yinrih still lived along the bank of the River, but their range extended as far south as the border between the jungle and southern grasslands. These border folk sent word north that one could get an unobstructed view of the sky by traveling south out of Newman's Dale and into the southern steppe. The term “bright way” originally literally meant the exodus out of the jungle, which symbolically represented yinrih fully embracing the gift of sapience by venturing out of the environment they emerged in, taking the first steps toward fulfilling the Great Commandment.