Three Worlds Collide assumes calibration is solved

Eliezer Yudkowsky's famous 2009 sci-fi story 'Three Worlds Collide' is a cornerstone of AI alignment debates, illustrating a tragic conflict between species with irreconcilable values. A new analysis argues the story's core assumption—that the alien species truly understand each other's moral reasoning—is a critical flaw. It highlights the difference between 'shared knowledge' and the 'common knowledge' needed for real coordination, suggesting we may misjudge superintelligent AI's intentions entirely.