I'm not sure what the lesson is here. A sane forecaster could never have been accurate? That seems like it would need some justification.
A simple justification of a slightly less extreme position is easy enough: there were many sane people who did not predict the value of the internet, indicating that being sane and smart are not sufficient to predict such things.
There are plenty of quotes from people who were supposed to be experts (or at least well-educated) saything that heavier than air flight was impossible, computers would always be room-sized monstrosities of limited use, etc. I assume that this quote is pretty much the same idea (that future technology is unpredictable), but using ...
Another month, another rationality quotes thread. The rules are: