Daniel Andler was a young researcher in cybernetics at the University of California, Berkeley. He believes it is impossible for a machine to think like a human.

"Over the years, I have had to admit that there is no definitive argument in this direction," he tells us. "The train of thoughts, step by step, can happen again," Andler says. "I will work for a while... this is not the end of my career," he adds, adding that he will continue to work on artificial intelligence.