There is a progression worth tracing. It runs from difficulty to urgency to disappearance. Making a decision has always been hard. To choose is to destroy, and closure carries the weight of what it forecloses. Organizations under acceleration make decisions prematurely, before meaning forms, and uncertainty redistributes. Now a third condition is emerging: the system decides before the human understands. The interval — the space between signal and action where meaning forms, accountability is born, and authorship is established — is disappearing. This essay names what is being lost, defines the last human act precisely, and argues that it cannot be delegated. Not because no system will ever simulate it, but because simulation is not the point. The point is authorship. The point is that someone has held the decision long enough to understand what it means. That act is the precondition for accountability. It is what leaders are for. Keywords: Human agency; interpretive agency; the interval; the last human act; making meaning; post-heroic leadership; algorithmic displacement; algorithmic decision-making; organizational accountability; leadership accountability; ratification; authorship; acceleration without metabolization; AI governance; human in the loop; interpretive leadership
David S Morgan (Sun,) studied this question.