This week’s newsletter is about ghosts, and, yes, it no doubt should have come out last week, on Friday the 13th. But it was a matter of timing: at that point, the synchronicity that provoked it had not yet occurred. “Synchronicity” is depth psychologist C.G. Jung’s term for a “significant coincidence,” when two things that can’t possibly be causally connected nevertheless occur in close proximity in a way that strikes us as somehow meaningful. We all have this happen, usually in ways that are minor and banal, as when we think of someone out of the blue, only to find they have emailed us for the first time in years.