• Generalization of the Two generals problem
  • generals, some of which might be traitors
  • traitors can do anything
    • can cooperate or act independently
    • can claim others are traitors as a deception
  • nevertheless, honest generals must agree on a plan
  • There is a proof that as long as fewer than 1/3 are traitors, a plan can be achieved (need honest generals to tolerate generals)