Boosting artificial intelligence a blessing or curse?

The rise of artificial intelligence (AI) has been quite remarkable in the past few years. Many experts predict that, like the Internet, AI will bring huge changes to our lives and be part of almost everything we do. Vast sums of money have been put into AI start-ups in China, and many existing tech companies have opened new research labs. But amid the optimistic atmosphere, many also have concerns about the ethical questions that artificial intelligence raises.