In Pannenberg: A Guide for the Perplexed, Bradshaw explains Wolfhart Pannenberg's thought, in which theology is not separable from a "secular" philosophy, along the grain of his development. Key texts are used for this, and difficult ideas, such as his notion of "retroactivity" from the future back through the past and present, are addressed in the context of Pannenberg's overarching view of things. His doctrines of the Trinity, his view of simultaneity and human development, as well as his engagement with the natural sciences are major areas that are given attention. How the ideal is instantiated in the real, or how the real is the rational, is argued as a clue to his system.