A、A Google manager is supporting the advancement of AI. B、The Watson supercomputer has defeated the greatest players of Jeopardy

(5) Professor Stephen Hawking has joined a group of experts concerned about that follows when humans build a device or write some software that can properly be called intelligent. He fears such an artificial intelligence could mean the end of humanity.
    (6) Similar worries were expressed by Tesla boss Elon Musk in October. He declared on controlled AI to be the ’’biggest threat’’ facing mankind. He wonders if we will find our end beneath the heels of a cruel and calculating artificial intelligence.
    Professor Nick Bostrom from the University of Oxford is worried, too. He has said an Al-led doomsday could destroy us within a century. (7) Google’s director of engineering, Ray Kurzweil, is worried about AI for less obvious reasons.  He is concerned that it may be hard to control super-smart software.
    IBM’s Watson supercomputer defeated the best players of US TV game show Jeopardy. And there are many, many examples of computers finding new and creative solutions to problems across diverse fields in the human world. The machines are slowly but surely getting smarter and the hobbies in which humans remain champions are becoming fewer.
5. What does the news tell about Stephen Hawking?
6. Who said rampant AI was the biggest threat to humanity?
7. Which of the following statements is incorrect according to the news?