2. "Then it is about sex, said Polly flatly. It’s a folk song, it starts with ‘’twas,’ it takes place in May, QED, it’s about sex. Is a milkmaid involved? I bet she is."
- Terry Pratchett, Monstrous Regiment
3. "The principles are exactly the same as those of QED: everything is built out of propagators, vertex diagrams, and coupling constants. But there are new actors and whole new plot lines, including one called QCD."
- Leonard Susskind, The Cosmic Landscape: String Theory and the Illusion of Intelligent Design
4. "We are told that "the meek shall inherit the earth." It follows that the meek are chosen of God. I shall try to be meek, not because I want the earth - you can keep it, after the way you've fucked it around it's not worth having - but because I too should like to be chosen of God. QED. Besides, I like animals better than you bastards."
- John Brunner, The Sheep Look Up
5. " did. Which means they all guessed 33 too. Which means the average guess is not 50. It’s 33. And two-thirds of 33 is 22. So my first conclusion was actually wrong. I should guess 22. Now I’m feeling very clever indeed. But wait! The other contestants also thought about the other contestants, just as I did. Which means they would have all guessed 22. Which means the average guess is actually 22. And two-thirds of 22 is about 15. So I should … See where this is going? Because the contestants are aware of each other, and aware that they are aware, the number is going to keep shrinking until it hits the point where it can no longer shrink. That point is 0. So that’s my final answer. And I will surely win. My logic is airtight. And I happen to be one of those highly educated people who is familiar with game theory, so I know 0 is called the Nash equilibrium solution. QED. The only question is who will come with me to London. Guess what? I’m wrong. In the actual contest, some people did guess 0"
- Philip E. Tetlock, Superforecasting: The Art and Science of Prediction