Why Do Crystals and Rainbows Have an Aspect of Design?

Socrates was right to point out that the appearance of sign in living things is something that needs to be explained. But socrates never stated what constitutes an appearance of design, and why do crystals and rainbows have it? Does the sun or summer? How are they different from biological adaptations such as eyebrows? The issue of what exactly needs to be explaining in an appearance ofdesign was first addressed by the clergyman william paley,. In 18 o, two before darwin was born, he published the following thought experiment in his book, natural theology. He imagined walking across a heath and finding a stone, or alternatively, a watch. And he explained the watch would require a