I think that, hundreds of years from now, if people invent a technology that we haven't heard of yet, maybe a computer could turn evil. But the future is so uncertain. I don't know what's going to happen five years from now. The reason I say that I don't worry about AI turning evil is the same reason I don't worry about overpopulation on Mars.

In this quote, Andrew Ng explores the uncertainty of the future, particularly regarding artificial intelligence (AI) and its potential for harm. He acknowledges that technology may evolve in ways that are difficult to predict, suggesting that a computer could eventually become "evil" if humans invent something beyond our current understanding. However, he emphasizes that the future is so uncertain that worrying about such possibilities is not something he prioritizes, since predicting the direction of technology in the long term is highly speculative.

Ng also compares concerns about AI to the idea of overpopulation on Mars, using this analogy to illustrate how hypothetical worries about future problems often seem distant and uncertain. Just as overpopulation on Mars is not an immediate issue, the potential for AI to "turn evil" is a concern that seems unlikely in the near future. His point is that both of these issues belong to the realm of speculative thinking and don’t warrant excessive worry at this moment in time.

By stating, "I don't know what's going to happen five years from now," Ng highlights the volatility of technological advancement and the difficulty of making long-term predictions. His quote reflects a pragmatic approach, focusing on present-day issues and developments rather than investing energy into scenarios that may never materialize. This mindset suggests a focus on immediate, tangible challenges rather than abstract fears about far-off possibilities.

The origin of this quote likely comes from an interview or lecture where Ng, a leading figure in AI and technology, was discussing the future of technology and the concerns surrounding its advancement. Known for his work in machine learning and his optimistic yet cautious approach to AI, Ng's statement reflects his philosophy of addressing current, practical concerns while recognizing that the future is inherently unpredictable.