"Intelligent design holds that the universe is so complex it must have been created by some kind of higher intelligence."
Similar reasoning has frequently been displayed by various advocates of the theories that any one of a dozen intellectuals of the renaissance authored Shakespeare's plays, rather than the Bard himself.
None of these people seem to grasp the concept of Occam's Razor when it comes to science or literary criticism. Oh, wait a sec, that's it!!! William of Ockham wrote Shakespeare's plays! Eureka.