Even graver ethical choices,Michael Kors Bags, often studied by philosophers and psychologists, regularly arise. What to do when faced with a choice between, say, mowing down a couple of bystanders and ploughing into a school bus packed with children? We compute these ethical costs and choices in an eye blink, and not just the choices but the moral reasoning behind them would have to be programmed into the self-driving car. And should there be a different module that switches on if the bus is packed not with children but with, say, ailing nonagenarians from a nearby hospice? And there are even simpler but still real ethical dilemmas that human drivers understand - say, that a speed limit of 50mph (80 km/h) on a fine day is really 60mph (96k m/h), while on a wet and foggy day, really 45mph (72 km/h). How do we programme this kind of flexibility into a machine?