Intelligent design is the proposition 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

Natural selection

Natural selection is the nonrandom process by which biologic traits become either more or less common in a population as a function of differential reproduction of their bearers. It is a key mechanism of evolution....

." It is a form of creationism and a contemporary adaptation of the traditional teleological argument for the existence of God, presented by its advocates as "an evidence-based scientific theory about life's origins" rather than "a religious-based idea".