Science-fiction author Isaac Asimov, imagining a future of artificial intelligence, pictured the 21st century as dominated by humanoid robots. He’s perhaps best known for his three laws of robotics, ...

Back in 1967, British philosopher Philippa Foote came up with "the trolley problem." Philosophers and others have debated this moral quandary ever since. Phrased most succinctly, the trolley problem ...