Edwards v. Aguillard in the context of "Neo-creationism"

Intelligent design (ID) is a pseudoscientific argument for the existence of God, presented by its proponents as "an evidence-based scientific theory about life's origins". Proponents claim that "certain features of the universe and of living things are best explained by an intelligent cause, not an undirected process such as natural selection." ID is a form of creationism that lacks empirical support and offers no testable or tenable hypotheses, and is therefore not science. The leading proponents of ID are associated with the Discovery Institute, a Christian, politically conservative think tank based in the United States.

Although the phrase intelligent design had featured previously in theological discussions of the argument from design, its first publication in its present use as an alternative term for creationism was in Of Pandas and People, a 1989 creationist textbook intended for high school biology classes. The term was substituted into drafts of the book, directly replacing references to creation science and creationism, after the 1987 Supreme Court's Edwards v. Aguillard decision barred the teaching of creation science in public schools on constitutional grounds. From the mid-1990s, the intelligent design movement (IDM), supported by the Discovery Institute, advocated inclusion of intelligent design in public school biology curricula. This led to the 2005 Kitzmiller v. Dover Area School District trial, which found that intelligent design was not science, that it "cannot uncouple itself from its creationist, and thus religious, antecedents", and that the public school district's promotion of it therefore violated the Establishment Clause of the First Amendment to the United States Constitution.

Of Pandas and People: The Central Question of Biological Origins is a controversial 1989 (2nd edition 1993) school-level supplementary textbook written by Percival Davis and Dean H. Kenyon, edited by Charles Thaxton and published by the Texas-based Foundation for Thought and Ethics (FTE). The textbook endorses the pseudoscientific concept of intelligent design – the argument that life shows evidence of being designed by an intelligent agent which is not named specifically in the book, although proponents understand that it refers to the Christian God. The overview chapter was written by young Earth creationist Nancy Pearcey. They present various polemical arguments against the scientific theory of evolution. Before publication, early drafts used cognates of "creationist". After the Edwards v. Aguillard Supreme Court ruling that creationism is religion and not science, these were changed to refer to "intelligent design". The second edition published in 1993 included a contribution written by Michael Behe.

A third edition of the book was published in 2007 under the title The Design of Life: Discovering Signs of Intelligence in Biological Systems.