While I hardly pin this down to simply Kurzweil's predictions, you're completely wrong in your statement. I believe he has 85% accuracy in his 100+ predictions, however, another 5-10% actually exist but not to the extent of his predictions. That's 95% accuracy...
This is all such baseless nonsense that I'm shocked the History Channel isn't running documentaries about the Singularity fronted by Kurzweil five or six days a week (they need one evening for "Modern Marvels" features about Cheez Whiz). He's another Nostradamus.