Human knowledge is limited surely, however we humans have not reached that. Maybe it can never be so. You are quite right about the Harry Potter books, which are quite unique in that sense. All these other books that I've come across have come from kindof the same story line, the plot seems kindof same, so maybe human creativity too is limited? we are closing on to our limits, but can we really close upon it? I wonder if that day would come cos, life seems to be like a passing dream. One moment you are here, next moment you dont even feel as if you had been so, but you have a distant memory that you have.... so it really rules out.... maybe we are real close, maybe we arent but then again who knows?