Another factor in the aborigines 'choice, according to Professor Kao Ye-jung of Pingtung Teachers' College, who has studied the aborigines and their culture for over 20 years, may have been defensibility against attack.
根據研究山地文化已廿多年的屏東師專教授高業榮的說法，「易守難攻」也可能是先住民選擇山地居住的因素。