Intelligent Design: The Bridge Between Science and Theology is a 1999 book by the mathematician William A. Dembski, in which the author presents an argument in support of intelligent design. Dembski defines the term "specified complexity", and argues that instances of it in nature cannot be explained by Darwinian evolution, but instead are consistent with the intelligent design. He also derives an instance of his self-declared law of conservation of information and uses it to argue against Darwinian evolution. The book is a summary treatment of the mathematical theory he presents in The Design Inference (1998), and is intended to be largely understandable by a nontechnical audience. Dembski also provides a Christian theological commentary, and analysis of, what he perceives to be the historical and cultural significance of the ideas. Source : Wikipedia (en)