Short stories fall into three categories for me. 1) Self contained, 2) a satisfying/interesting snippet suggesting at a wider world/story, and 3) a snippet that suggests at a wider world/story and could realistically be expanded into a full novella or novel. 

I read all types, I find types 1 and 2 the most common, and I tend to prefer reading type 2. Glitch is one of the rare short stories that fall into type 3. I read this as an audiobook, within the half an hour it took to complete I was fully engaged, there was solid character building of the main protagonists (Sam) and the robot (Max), and story development. The idea of

sentience

is old school Isaac Assimov, but I loved the fresh way it was introduced and framed. I could see this being an interesting novella and I hope Hugh Howey writes more sci-fi short stories.