Well, there are knowns and there are unknowns, and then there are the things you didn't actually know, yet somehow intuitively "know" are true. Now, I don't know for sure, but I think it possible that, though it might have been an unknown unknown (or was it an unknown known? Make a note to check on that,) I could quite well have "known" something without actually knowing that I had known about it, beforehand.
You know?