 But there are multiple rival models that create a sort of "pseudo-competition" among their supporters due to narrow focus on data from limited geographic areas or disciplines.The most notable of which is the "Out of Sundaland" (or "Out of Island Southeast Asia") model.As a generalization, authors that are based in Indonesia and Malaysia tend to favor the "Out of Sundaland" model, while authors based in Taiwan and the Pacific Islands tend to favor the "Out of Taiwan" model.