I thought this might be a fun test of PRSI intelligence/instruction following ability . The scenario would be familiar to many of us who've taken a philosophy course/read The God Delusion. The instructions are very clear; 1. Answer the question with a simple I would flip the switch or I wouldn't flip the switch. 2. Justify your answer with a paragraph or two. 3. There is no (I repeat NO) additional information you can add to the scenario. i.e. I don't care if you have a rocket launcher. 4. Feel free to ask questions to explore other people's answers. If you fail to adhere to rules 1, 2, and 3 you are of low IQ, deserve ridicule, and mankind hopes you never procreate . Scenario A (shamelessly pulled from wikipedia); A trolley/tram/train is running out of control down a track. In its path are 5 people who have been tied to the track by a mad philosopher. Fortunately, you can flip a switch which will lead the trolley/tram/train down a different track to safety. Unfortunately, there is a single person tied to that track. Should you flip the switch? (edit: assuming the thread is popular I'd like to use the additions/changes the scenario in coming pages to further examine people's train of thought). edit 2: Scenario B There are five young people in hospital suffering from terminal illnesses that are genetic in origin (they by no means brought their imminent deaths upon themselves). Their only hope is a transplant which will definitely save their lives. Assuming no donor organs are available before they die, is the death of a single, healthy, innocent individual as an organ source justifiable to save these five people? Does your answer differ between the two scenarios? If so, why?