Imagine you are at a party with 100 people, and those partygoers are one of either two types of people: either truth tellers who always tell the truth, or liars who always lie.
Now, imagine that before going home, some of them shake hands. Then you ask each person: “How many truth tellers did you shake hands with?” One person tells you 99, then next says 98, then 97, 96, 95 … and so on, all the way down to 0.
