First Shift - Legacy

 is the sixth novella in author Hugh Howey's Silo Saga series, originally published as an "eBook" on April 14, 2012. It is the first part of the SHIFT trilogy.

Synopsis
In 2007, the Center for Automation in Nanobiotech (CAN) outlined the hardware and software platform that would one day allow robots smaller than human cells to make medical diagnoses, conduct repairs, and even self-propagate. In the same year, the CBS network re-aired a program about the effects of propranolol on sufferers of extreme trauma. A simple pill, it had been discovered, could wipe out the memory of any traumatic event. At almost the same moment in humanity’s broad history, mankind had discovered the means for bringing about its utter downfall. And the ability to forget it ever happened.