Hallo Daniel. Interesting answer, and I think our conclusions basically agree. Jill ("my other half") had been wondering whether, if ER was literally true, it might explain the deja vu phenomenon and that's how we got to talking about it. Even though I see it as only having a "stimulus value" and, unlike the will to power, no actual value as part of a description of the universe, I have still given it some thought since it was so important in N's eyes. Walter Kaufmann wrote in Nietzsche: Philosopher, Psychologist, Antichrist that most of N's interpreters have disregarded the conception of ER though it would seem no author can be understood correctly as long as the very notion which he himself valued most extravagantly is ignored. Which reminds me I'm overdue a rereading of Kaufmann's great book, where ER gets quite a bit of discussion.