Healthcare professionals make important decisions every day. The ability to make decisions is central to human experience and something we often take for granted. Some decisions are of little consequence, such as what to have for breakfast, other decisions are of greater consequence, such as whether to sell one’s house. For the most part, we make these decisions ourselves, perhaps in conjunction with another person and we act upon that decision. But what if we were unable to decide for ourselves and were reliant on other people deciding for us? How can we be sure that people making decisions about our lives are doing so in a correct way?