Science is one of the most amazing tools that human beings have ever invented. But like all tools, it has limits. A hammer is a wonderful thing for banging in nails: it’s positively useless for making omelettes, doing brain surgery, or explaining why we have nails in the first place. That science has limits is illustrated well by the existence of questions that science cannot answer. One such question is this one: what is the value of a human life? How might we answer that question using science? Well, perhaps we could find a giant test tube, boil you down to your constituent chemical parts and then stick those parts on eBay and see what somebody would bid for them. Most people, however, would conclude that such an experiment would make you a sociopath, not a scientist. — Andy Bannister (from, Science and God)