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If the facts are contrary to any predictions, then the hypothesis is wrong no matter how appealing.

The affairs of this world are so shifting and depend on so many accidents, that it is hard to form any judgment concerning the future; nay, we see from experience that the forecasts even of the wise almost always turn out false.

Predicting has a spotty record in science fiction. I've had some failures. On the other hand, I also predicted the fall of the Berlin Wall and the rise of fundamentalist Islam... and I'm not happy to be right in all of those cases.

I stopped predicting the future a long time ago.

Nobody wants a prediction that the future will be more or less like the present, even if that is, statistically speaking, an excellent prediction.

You can never properly predict the future as it really turns out. So you are doing something a little different when you write science fiction. You are trying to take a different perspective on now.

I find that predicting the course of our lives is like predicting the weather. You might be able to predict your future in the short term, but the longer you look ahead, the less likely you are to be correct.

You can only predict things after they have happened.

That's kind of like how jazz is sometimes. You're out there predicting the future, and no one believes you.

If I want to speculate wildly about the future, I have my science fiction. Anybody who tells you they can predict the future is either crazy or lying.