Paley argued that if we walked through a field and found a rock, we would not assume the rock was designed by anyone. We would just think that it was a result of natural causes. But if we found a watch in the same field, even if we did not know what watches were, we would know that someone designed it, for we recognize design when a thing has a complicated set of parts that function in order to accomplish a specific end or purpose. According to Paley, the natural world is full of living things that are much more complex than watches, and so he concluded that these things must be designed, and
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