Thousands of years ago, ancient Greeks and Romans considered the idea that life had been designed by some unknown force. At the same time, they wondered if life had progressed from "higher" or "lower" forms over time. Jump forward to today, and the same two questions are still at war. The intelligent design movement, unlike prior competitors to naturalism, represents a solid, clear, and compelling case for design theory. This newer approach partially explains why the intelligent design movement has endured intense scrutiny yet continued to gain support in the worldwide intellectual community.