In the game of Truth or Dare, players are made to choose between two options:
1. **Truth.** Answering a particular question.
2. **Dare.** Performing a particular action.
Against a perfect opponent, which option should one choose to minimise harm?
Here is a minimax argument for Truth.
1. A Dare is a request.
2. A Truth is a request for information.
3. All requests for information are requests.
4. Not all requests are requests for information.
5. Thus, all Truths are Dares, but not all Dares are Truths.
6. Thus, the space of Truths is a proper subset of the space of Dares.
7. Thus, choosing Truth strictly reduces the space of issuable requests.
8. Some requests are harmful.
9. A perfect opponent issues the most harmful request.
10. The most harmful request in a proper subset is never worse than the most
harmful request in the full set.
11. Thus, the most harmful Truth is never worse than the most harmful Dare.
12. Thus, choosing Truth minimises harm.