The Silo Saga

In a ruined and toxic landscape, a community exists in a giant silo underground, hundreds of stories deep. There, men and women live in a society full of regulations they believe are meant to protect them. Sheriff Holston, who has unwaveringly upheld the silo’s rules for years, unexpectedly breaks the greatest taboo of all: He asks to go outside.

This is the story of mankind clawing for survival, of mankind on the edge. The world outside has grown unkind, the view of it limited, talk of it forbidden. But there are always those who hope, who dream. These are the dangerous people, the residents who infect others with their optimism. Their punishment is simple. They are given the very thing they profess to want: They are allowed outside.

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, 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.

Wool introduced the silo and its inhabitants. Shift told the story of their making. Dust will chronicle their undoing. Welcome to the underground.

Hugh Howey is known for crafting riveting and immersive tales of boundless imagination. Now comes Machine Learning, an impressive collection of Howey's science fiction and fantasy short fiction, including three stories set in the world of Wool, two never-before-published tales written exclusively for this volume, and 15 additional stories collected here for the first time. These stories explore everything from artificial intelligence to parallel universes to video games, and each story is accompanied by an author's note.