Fire Upon The Deep and A Deepness in the Sky by Vinge I felt were really interesting from a CS perspective, when thousands of years in the future you have billi

Fire Upon The Deep and A Deepness in the Sky by Vinge I felt were really interesting from a CS perspective, when thousands of years in the future you have billions of lines of code running ships, etc. that no one exactly knows how it works anymore, code archaeologists, etc.