There once was a doctor with cool white hair. He was well known because he came up with some important ideas. He didn’t grow the cool hair until after he was done figuring that stuff out, but by the time everyone realized how good his ideas were, he had grown the hair, so that’s how everyone pictures him. He was so good at coming up with ideas that we use his name to mean “someone who’s good at thinking.”
In philosophy, there’s an ethical question called the trolley problem. If you had to push one large person in front of a moving trolley to save a group of people on the tracks, would you? This abstract idea has taken hold in programming self-driving cars: what happens if it’s impossible to avoid everyone?
–Who Will Driverless Cars Decide To Kill? | Australian Popular Science