related noun: semiotic haunting.
A hallucinatory experience (or perhaps entirely real?) resulting from studying microhistory too much. The ruins of previously imagined potential futures, ruins of desire, ghosts of never-realized entelechies. Often the result of hallucination, drug use, or studying too much history, one finds oneself suddenly swept up in a world that could have been but never was. The pentimento of intention/desire.
According to Gibson you can be cured of these semiotic hauntings by really bad media: think porn, binging Netflix, Tom Swift novels.
“Hell of a world we live in, huh?” The proprietor [asked as I sat] anxious to….submerge myself in hard evidence of the human near-dystopia we live in. “But it could be worse, huh?”
“That’s right, I said, “or even worse, it could be perfect.”
He watched me as I headed down the street with my little bundle of condensed catastrophe.
Related: entelechy, pentimenti, if-only, future shock, mellagia.