The history of the Aeta continues to confound anthropologists and archaeologists. One theory suggests that the Aeta are the descendants of the original inhabitants of the Philippines, who, contrary to their sea-faring Austronesian neighbors, arrived through land bridges that linked the country with the Asian mainland about 30,000 years ago. Unlike many of their Austronesian counterparts, the Aetas have shown resistance to change. The attempts of the Spaniards to settle them in reducciones or reservations all throughout Spanish rule failed.

Mining, deforestation, illegal logging, and slash-and-burn farming has caused the indigenous population in all parts of the Philippines to steadily decrease to the point where they number in the thousands today. The Philippines affords them no protection. In addition, the Aeta have become extremely nomadic due to social and economic strain on their culture and way of life that had previously remained unchanged for thousands of years. The Aeta have no sense of money or land ownership and sometimes can be seen camping out in city parks or panhandling.

While resisting change from the other society for hundreds of years, the Aetas have adjusted to social, economic, cultural, and political pressures with remarkable resilience; they have created systems and structures within their culture to cushion the sudden impact of change.