Someone knocks at your door. They tell you they have something for you. It's a glass box with a red button inside. They tell you that you will get one million dollars (or X amount, it doesn't matter, really) if you decide to open the box and press the button. That's all you have to do get the money. Of course, you're suspicious, how can you get so much money by just pressing that button, so you ask if something will happen to you if you press the button, and they say that nothing will happen to you by pressing the button. However, they say, if you decide to press the button, a person you don't know will die. So you'll be responsible for the death of one person, that you don't know and it's not related to you whatsoever, if you press the button, but you'll get the money.
