Quote Originally Posted by fj1200 View Post
We've had this discussion before. I don't believe you can write a test for ID. ...
It's already written.
The SETI project scans waves from space looking for patterns that are not random but go beyond simple repetition and form codes. Based on that if they receive a complex coded message then that is the indication of intelligent life.
Coded messages are not natural, by default they have an intelligent source.