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Why do alliances arise in multiplayer games?

  • A.Two players may both gain by acting against a third
  • B.The rules of such games usually permit formal agreements
  • C.Multiplayer games are never zero sum by construction
  • D.The utility vector cannot be computed without cooperation

Answer: A

When one player is far ahead, the others' utilities both rise if that player is checked, so temporary cooperation is individually rational without any agreement being made. It emerges from the payoffs rather than from the rules. Formal agreements, zero sum structure and computability are separate matters. Behaviour that looks social but follows from each participant pursuing their own utility is a recurring and instructive phenomenon in multi-agent settings.

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