Zachariah
Banned
The challenge, with any POD since the establishment of the first sedentary human agricultural settlements there (i.r.o. 7000 BCE in the Wahgi Valley, more than 1000 years before the establishment of comparable agricultural settlements on Jomon-era Honshu), is to come up with a plausible alternate timeline which results in the island of New Guinea (which would be known by another name ITTL, of course) becoming the most populous island in the world by the present day. For this challenge, the island has to have a minimum population of at least 100M, and a population of over 150M for bonus points. Up for it?