"Anecdotally, at least, I very rarely (if ever) recall the details of a text by attempting to actively recall some specific fact, date, historical accident, or the like, but this by no means suggests that I have no memory of something I've read because it is so often the case that details I'd completely forgotten about return at the most unexpected times, triggered by the most unexpected stimuli."

Ideas from books I've read often jump into my head when it is relevant to the conversation at hand.