While at dinner, Kramer asks a Miss America contestant what she would do to make the world a better place. She says that she would try to end world hunger. "If everyone ate one meal less, there would be enough food to feed the world." Jerry says that's one "helluva plan." This is an example of unsound economic reasoning: the misconception that for others to have more, we must take less.
The Man in Black challenges Vizzini to a battle of wits in which he puts poison in a cup and asks Vizzini to guess which cup has the poison. Vizzini explains his thought process as he comes to a decision.