A "design" is an abstract concept. We can speak of the "design" of the human heart without expecting to find a blueprint somewhere. Even in cases where we know there was a human designer, the design of a human creation remains even if no documents or memory of the design exists. We see design where we see purpose. "Design" and "model" are closely related concepts and both may be seen to live in the same "space". DNA can be seen to embody the design of a life form, but the physical embodiment of the design in the DNA is not essential. In fact the non-essentiality is a characteristic of models/designs. We could imagine creating a process that would produce all the machinery of the cell by some other means - even such a simple means as switching the chemical structure but not the "meaning" of one of 4 letters of the genetic code. At the "mind" level of model and design, we know that our minds are somehow implemented in...