Carson: Gravity, where does it come from?

[Mehmentum]

'I don't know every detail about how or why something works, therefore God must be the answer.'

We don't know why the laws of physics are the way they are.  Its possible that we'll figure out what determines the laws of physics with a unified theory of quantum gravity.  But then Carson could just ask why this mechanism for creating the laws of physics works. 

You can do the same thing to creationists.  Ask 'what created god?' or 'why does god exist?'.  They'll tell you that god is uncreated and eternal, or something like that.  Physicists could just say that 'gravity just is', but they don't.  Instead they acknowledge that we don't know everything, but that they're trying to figure it out.