They knew I had a stutter before I gave this presentation, because we had classes together, so I guess it was naive of me to even try to explain it. But when I did, he said that if he evaluates everyone in terms of fluency, he cannot make exceptions, and that I should just prepare myself better. He wasn't the most understanding person. I had classes with him for two years, and as far as the first year was bearable, that the second one was hell on earth.