I think the question you raise is a good one. Can we apply our experience of what we produce, our experiential knowledge of design, to biological systems themselves, and ultimately to nature itself? Because if we can, design is easily detected in biological organisms. On the other hand, if it is not logical to view nature through the lens of design, one must ask the question, is the ability to intentionally organize matter a natural phenomenon? if design is not natural, where does it come from? If it is natural, is it possible that it is a property if the universe that we can access, and if it is, what excludes the idea of nature being designed?
The way I see it, if there is no verifiable method to detect design in biological organisms, there can be no verifiable method to explain the rise of designers from nature.