"Non Sequitur, Dogbert. Ken says he has debunked 100% of people who claim to have psychic powers. He didn't say he predicted he would debunk them. "
Actually it is implied he said this. You are being pedantic. In any case, this is what sceptics do. They set out to debunk things and often use methods that simply wouldn't stand if you used them in any other scientific field.
Part of the scientific method is forming a hypothesis. So, Dogbert is assuming that the moustache guy started the study to prove the point that psychics aren't real. This is a realistic assumption, considering the typical viewpoint of scientists. The second panel is making my point with fewer words.
I suppose it would be confusing to those who don't know the scientific method.