Too Many Yesterdays, Not Enough Tomorrows is set in a post-apocalyptic universe after a quantum proliferation has divided it into pocket universes in which reality constantly repeats itself. The main activity is structured around blogging and imagines how interactions happen within such a context.
The universe resets itself every day through the “rollover” that happens every ten hours. The setting gives the illusion of infinite time suggested in different parts of the story “It was going to be another beautiful day in infinity”, or the poems that get erased at every rollover.
I found interesting that true connection was the reason some people didn’t live in this new world, they didn’t last, as if the only reason they would continue onto this universe is their lack of authenticity. It’s a dark reflection on how today’s virtual world seems more vivid than reality, and how some people tend to form superficial bonds with no authenticity or actual connection… in the world of N.K. Jemesin, these people are the survivors of the post-apocalyptic universe.
But surprisingly, Helen meets someone online, who happens to show her a rush of emotions and appreciation. This seems like the beginning of something different than the routine Helen had been used to. Their connection might break the pattern of superficial connections that had been going on between universes. By learning from the past, she might leap into the future with a different light.