News Analysis: After AlphaGo's achievement, do humans need to fear artificial intelligence?

CAMBRIDGE, United States, March 19 (Xinhua) -- Google's computer program AlphaGo stunned the world this week by defeating a top professional player at Go, a board game that has trillions of possible moves and often requires players' intuition. "The AlphaGo success shows again that this is a golden era for the development of intelligent software that can be as intelligent or more intelligent than humans in narrow domains of intelligence," Tomaso Poggio, professor of Department of Brain and Cognitive Sciences at Massachusetts Institute of Technology (MIT), told Xinhua. While many people around the world witnessed the achievement accomplished by artificial intelligence (AI) with excitement, some also expressed a renewed wariness over the technology and wonder: It is a boon or a bane for mankind? AI, a field that has existed for more than 50 years, grows along with the development of cognitive science and neuroscience. Poggio regards the subject of intelligence as the greatest one in science, because it has to do with the question of how human brain works and what is the mind.