While it may seem counterintuitive, predicting the future is one of the most effective ways to create the future. When you predict X, assuming you have the right reach or that this operation is repeated enough times, you are effectively bending the future in the direction of X.
Depending on how you look at this, it can be either depressing (“No one knows anything”) or liberating (“Stop predicting things that cannot be predicted; start manifesting the future you want to see”).
This is the job of a good futurist: to simultaneously predict the future and imprint their vision of the future onto the world.