Evolutionnews.org just published an article by me titled “Design Inference vs. Design Hypothesis.” Here is an excerpt:
The logic of the design inference moves from a marker of intelligence (specified complexity) to an intelligence as causal agent responsible for that marker. The direction of this logic can, however, be reversed. Thus, instead, one can postulate an intelligence operating in nature and therewith formulate predictions and expectations about what one should find in nature if that postulate is true. The logic in this case takes the form of hypothetical reasoning, where a hypothesis is put forward and then its consequences are drawn out and the explanatory fruitfulness of the hypothesis is seen as a way of advancing science and giving credibility to the hypothesis. Stephen Meyer has taken this approach to design reasoning, treating it as an inference to the best explanation in which the hypothesis of design gains credibility because of its power in explanation.