'Take Science Fiction Seriously': World Leaders Sound Alarm on AI

BLETCHLEY, United Kingdom--Here in the English countryside, at an estate where World War II codebreakers cracked the Nazis' Enigma encryption machine, world leaders pledged to work together to lessen risks of a technology they said also poses a grave threat. Artificial intelligence, they said, could in its most advanced forms create catastrophic risks in realms including cybersecurity and biotechnology--or even escape human control.