  Another and related reason for the unpredictability of action is that its consequences are boundless: every act sets in motion an unlimited number of actions and reactions which have literally no end.  As Arendt puts it: “The reason why we are never able to foretell with certainty the outcome and end of any action is simply that action has no end” (HC, 233). This is because action “though it may proceed from nowhere, so to speak, acts into a medium where every action becomes a chain reaction and where every process is the cause of new processes … the smallest act in the most limited circumstances bears the seed of the same boundlessness, because one deed, and sometimes one word, suffices to change every constellation” (HC, 190).