Decisions are central to engineering processes and hold them together. It is argued that better decisions will lead to better engineering. To achieve better decisions requires that they be understood in detail. A typical decision is broken down into its essential requirements and processes, thus displaying the components of its framework. The process leads to the identification of a number of concerns. The components are discussed and a set of issues where more work needs to be done is identified. There are significant implications for both engineering practice and engineering education.