On the accuracy of futurist predictions (usually not very accurate).

In particular, people who were into “big ideas” … generally fared poorly, whether or not their favored big ideas were correct .. Another common trait of poor predictors is lack of anything resembling serious evaluation of past predictive errors … By contrast, people who had (relatively) accurate predictions had a deep understanding of the problem and also tended to have a record of learning lessons from past predictive errors.

Perhaps unsurprising. But the detail of the analysis provides very interesting insight into what kinds of things are predictable.