Not a man to answer a question directly, here’s Derrida on ghosts from the 1983 film Ghost Dance.
Not sure that I’m 100 percent tracking with him on this one. Derrida’s answering a fundamentally spiritual question with a literal, yet metaphoric, theory of human memory. And then somehow, he ties that to the physical world, not to mention the American on the phone. I understand when he ties an evoked memory — or even the girl’s sexuality — to phantasmal auras. But, that’s metaphor. Sorry JD, not there yet. Maybe I need to watch some more of the movie.