The main thrust of the intelligent design movement is that intelligent agency as an aspect of scientific theory making has more explanatory power in accounting for natural phenomenon than chance or scientific law. What that means is that when there is a phenomenon of some sort, saying that an intelligent agent is the cause of it makes more sense than saying it just happened by chance or it happened because of a natural or scientific law.

— Francis Beckwith, from the Evolution In The Schools and In The Law lecture, disk 1 at 6:56