Just a suggestion, but instead of stating "you can't prove it's not history" or whatever the subject might be, how about asking if your opponent actually can prove it? If nothing else it's much more reasonable, yes?
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'
