Deja Vu

A few hours ago as I just stepped into the elevator at the train station, I had my book (The World Is Flat by Friedman) ready on this page with my index finger acting as bookmark. I had been reading the book in my commute and it was such a good read I could not close it even as I walk to the turnstiles. Just as I stepped into the lift, I opened the book to continue reading it, I had a deja vu. Not only that I thought it was queer coincidence but a few moments right before the deja vu happened, I thought I predicted that I would be having the deja vu. Afterwards, I kept on thinking how was that even possible? In the end, I thought when I first got hold of the book, I must have casually opened it in that exact page and read a paragraph or two, but which I already put deep in my subconscious for forgetting. Then since I take the elevator quite often, the memories of both events were combined to make the collage that is the deja vu. Plausible? Hhhmmm....