Our memory is a strange thing. Several years ago my brother talked me into reading a Sci. Fi novel, which is a rare occurrence since he and I have very different tastes in that area and so I rarely if ever take his advice. That time I did and really liked the book. Much later, a few months ago actually, we were talking about different things and I thanked him for the tip, at that point I realized that he had no idea what I was talking about, even after I described him the story in detail (I have a good memory about those things) It was as if he had never even heard of such story. That really makes me wonder since I 've read many many books, likely much more than he did and I couldn't for the life of me forget a book that completely! Ask me about a novel that I read once when I was a kid and I am pretty sure that I could give you a rough summing up of what it was about. Maybe my bro never read that book and he told me what he's read about it in an article and then forgot about it... Even that seems strange.