In fairness, biological evolution is a testable, disprovable theory. After over a hundred years of challenges and tests, it's still standing. All of modern biology is based on it. Reject evolution, and you might want to reject its products, such as antibiotics and most forms of modern medicine.

Creationism, on the other hand, is based on faith, and thus untestable. You cannot devise an empirical test to see whether or not the Creator made the world ten thousand years ago.

So yeah, although Kadgar has been a little ... forceful ... in his arguments, the man has a point. You cannot hold a legitimate debate between creationism and evolution, since they operate in entirely different spheres. It's like saying let's have a debate between physics and oil painting, or a footrace between thermodynamics and communion. Although evolution and creationism address the same issue ("Where did all of this stuff come from?") they are playing by entirely different rules.