computer system allowed him to communicate with people using an on-screen keyboard controlled by detecting his cheek movements.
Referring to his disability in his latest book, Short Answers to Big Questions, he wrote: “For centuries people with disabilities like me were believed to live under a curse from God. “Well, I suppose it’s possible that I’ve upset someone up there, but I prefer to think that everything can be explained in another way, according to the laws of nature. “If you believe in science like I do, you believe that there are certain laws that one always obeys.
Later he wrote about his thoughts on the afterlife, adding: “We are that everyone is free to believe what we want and I think the simplest explanation is that there is no God , who created the universe, and no one controls our destiny. “This brings me to the deep realization that there probably is no heaven and no afterlife. “We have this one life to appreciate the wonderful design of the universe and for that I am very grateful.”
Speaking to the BBC about the future of the universe, he outlined how artificial intelligence could be humanity’s last straw. He said: “The development of full artificial intelligence could mean the end of humanity.
“It would start on its own and reform itself ever faster.”