Hume's Logical Objection to the Argument From Design Based on the Uniqueness of the Universe
Arguments from design in Hume's day were often cast as arguments from analogy. For instance, a very simple version might read like this: ‘The universe resembles a machine; machines are the products of intelligent design; therefore, the universe is (probably) the product of intelligent design.’ Design arguments (usually of a more sophisticated sort) were put forward by some of the greatest scientists of the time, including Robert Boyle and Isaac Newton. Such arguments were generally thought to be on a par with the conclusions of physics: Hume raised a number of well-known objections to such design arguments. I am going to discuss one of these objections, the claim that the uniqueness of the universe is, in itself, a bar to our drawing any conclusion about its cause or origin. This objection is raised by Hume at the end of ‘Of a Particular Providence’ and in Part II of the Dialogues.