I find I never need to use evolution to show that my "opposing person is ignorant or stupid". It's much more satisfying to let their own words do that.
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.'