A dilemma is a difficult ethical question that we face throughout our lives. In a laboratory experiment, imagine a self-driving car is driving on a highway. It breaks down and has to choose between crashing into five pedestrians crossing the road or changing lanes and crashing into a car with two passengers. You, the expert driver, are responsible for deciding what the self-driving car should do in that situation. What would you do? All five potential outcomes are possible, and each has its own set of ethical problems.