ELI5: Explain Like I'm 5

Traveler's dilemma

The Traveler's Dilemma is a game that two players can play. Each player must decide whether to trust the other player or not. The game works like this: Player 1 is given a choice of two items, and Player 2 is given the same choice. Both players have the same amount of money to spend, and each item costs the same amount. Player 1 must choose one item and Player 2 must choose the other item. Whoever chooses the more expensive item will get both items and will have more money than the other player, but if both players choose the same item, neither of them will get anything. So, each player must decide if they want to trust the other player or not. If they trust the other player, they can try to get the cheaper item, but if they don't trust the other player, they might get the more expensive item and end up with more money.