Honestly, I believe that Issac Newton wrote that paper, but if Einstein can prove Newton's theory of gravity wrong, then I think he might have been wrong about that too. Plus biographers think that Newton had OCD, when people who study the psychic encounter somebody who has power but also has the possibility of mental illness they screen the person carefully with a psychietrist for other problems like schizophrenia.
I do not believe Da Vinci quite had the gift of prophecy. I believe that his witnessing a massive flood as a young man gave him a phobia of water so great that he was obsessed with the element.
Some of our greatest geniuses are also cursed by madness. Its the nature of the beast. With blessings come curses.
I also do not believe that the Web bot project is a source of prophecy, simply by the nature of how it gathers data from the internet to make its predictions. I think the web bot is parroting the anxieties of webusers. If enough people google 2012, odds are the bot will pick that up and confirm those fears. Like some kind of superspy it searches out the things we write, the things we publish, the things we search for and the things we send to each other.
Its great for predicting sales trends and the economy, with all the money changing hands on the web every day, a supercomputer that can analyze them all and turn them into a simple coherant picture is a powerful tool. But it flat out sucks as a source of prophecy. I mean, if it were smart enough to predict the future, then one might wonder why such a program doesn't go Terminator on us and take over in an attempt to do something about it.