[heleph]

I really loved Containment, one where the human race woke up one day to find that the stars had disappeared because the solar system had been placed in a huge container.

I loved how humanity reacted to having their horizons limited, but in an unexpected but potentially reversible way.

Greg Egan's stories always ask really great what-if questions. I think about them long after I read them. I'd actually forgotten that permutation cities was where those interesting ideas about consciousness came from.