This is interesting. Kurzweil did pretty well on technological predictions - I count him 6 for 7 on purely technical predictions. He did very badly on socio-economic predictions. I give him 5 out of 24 based on a lot of half points. In many cases however the technological component of these predictions was available (except on speech recognition which is interesting in itself for HalFinney's reasons) and he was just wrong on his predictions of how society would adopt it. I score him 12/18 where he was right about the technology but wrong about the socio-economics. Ignoring speech recognition he's 12 for 13 on the tech (I granted a couple of half points).
I note that this was posted in December 2008 so given Kurzweil's exponential growth theory it seems a bit premature to pass judgement at that point - you would expect quite a few of the claims to only come true in the last year of the decade if his theory were correct.
This seems worth posting around now... As I've previously observed, futuristic visions are produced as entertainment, sold today and consumed today. A TV station interviewing an economic or diplomatic pundit doesn't bother to show what that pundit predicted three years ago and how the predictions turned out. Why would they? Futurism Isn't About Prediction.
But someone on the ImmInst forum actually went and compiled a list of Ray Kurzweil's predictions in 1999 for the years 2000-2009. We're not out of 2009 yet, but right now it's not looking good...
Now, just to be clear, I don't want you to look at all that and think, "Gee, the future goes more slowly than expected - technological progress must be naturally slow."
More like, "Where are you pulling all these burdensome details from, anyway?"
If you looked at all that and said, "Ha ha, how wrong; now I have my own amazing prediction for what the future will be like, it won't be like that," then you're really missing the whole "you have to work a whole lot harder to produce veridical beliefs about the future, and often the info you want is simply not obtainable" business.