Thanks everyone!
It's true, witnesses accept all of science, even using it and quoting it to back up their world views, RIGHT UP TO where science disagrees with them. Then it's hogwash and unreliable.
I need to know about the scientific process myself so that I can explain it clearly, and show the difference between real science and newspaper articles claiming that butter is now bad for you unless it's smeared on your door post so the demunz don't get you...