We recently received the following question:

I hope my query can be directed to someone able to respond to my question regarding to the theory of intelligent design.

My question is: "WHO DESIGNED THE DESIGNER??????"

After a few moments of stunned silence, I realized what a powerful objection this is. In fact, it's a universal acid, a show stopper. Its application is almost limitless. For example, people say that Mt. Rushmore was sculpted. But that does nothing to explain the origin of the sculptors! Similarly with respect to all examples in which we infer the activity of an intelligent agent. All those explanations fail to explain the origin of the agent itself, and are therefore unjustified. Therefore, we can never infer design in any case. Therefore, if you are reading this, you have no justification for inferring that someone has written this post. It's best just to stop the regress of explanation at the computer screen itself.