- Man-made artifacts exhibit design because they were created by intelligent beings.
- Nature exhibits design.
- Therefore, nature was created by an intelligent being.
- If we take this analogy seriously, then we might as well conclude that nature was created by a committee of divine designers, since man-made artifacts usually take more than one person to make.
- If we take this analogy seriously, then we might as well conclude that nature was created by a malevolent divine designer, since natural disasters bring about pain and suffering to living creatures.
Now, consider another, similar question. According to many theists, life is supposed to be a gift from God. At the very least, life is something that is granted to humans by God. If that is the case, given the man-made artifacts : human designer :: nature : divine designer analogy, doesn't it seem strange that God would give us something without a single and clear instruction manual? After all, man-made artifacts come with a single and clear instruction manual. So, by analogy....
If one takes the man-made artifacts : human designers :: nature : divine designer analogy seriously, it seems that one can argue as follows:
- If the divine designer were like human designers, then the divine designer would give us a single, clear instruction manual with the gift of life.
- The gift of life doesn't come with a single, clear instruction manual.
- Therefore, the divine designer is not like human designers.