> So if we're going to ignore the year, he might as well make all of his predictions just be "eventually, we'll accomplish X". The cognitive dissonance of Ray Kurzweil is impressive.

So there's no value in being close? Being off by six years is the same as being off by eight centuries?

Well, where does he draw the line? Will he claim success when a prediction comes true, but ten years late? 15? What is the definition of a failed prediction, according to Ray Kurzweil?

Here's a scenario: It's 2028, and my doctor says I'm in the early stages of Alzheimers. Do I sell everything and try to knock items off my bucket list, or do I keep working like everything's normal and wait for the advent of nanobots? If Kurzweil had a model (other than a linear regression, please) I could at least make some educated guesses. But he's basically just a science fiction author who has decided to tack years onto his stories. I don't know what I'm supposed to do with that.