Well, predictions are always inaccurate, there is also some kind of current-time-bias. For example, people in later 18 century believed that in the future all carriages will move without horses, literally: usual 18 c. carriages that moves by itself. And no one predicted automobile as we know it today (since 192* it hasn't changed conceptually).

So all these predictions are not came true at all, their authors dreamed of absolutely different things (except ideal concepts like “total boredom” for example).