British  theoretical physicist and author Stephen Hawking:  he said artificial intelligence could be “be the best or worst thing to ever happen to humanity” during his keynote speech at the Web Summit in Lisbon, Portugal. Photograph: Patricia De Melo Moreira/AFP/Getty Images

For anyone hoping the organisers of the Web Summit might fail dismally in Lisbon and end up back in Dublin with their tails between their legs, think (...)