1. So far as we are able to determine, every highly complex object with intricate moving parts is a product of intelligent design. (The only such objects whose ultimute origin we are sure about are artifacts designed by people.)

2. The universe is a highly complex object with intricate moving parts. (from observation)

Therefore,

3. Probably, the universe is a product of intelligent design. (from steps 1 and 2)

4. No one could design a universe but God (its a big job)

Therefore,

5.Probably, there is a God. (from steps 3 and 4)

The visible order of the universe proclaims a supreme intelligence.