Photography is largely about capturing the moment. Not just any moment, though. We're talking that singular instant when light, expression, movement and environment all converge in one significant fraction of a second. That's when the dirt's flying, the action's peaking and that ray of golden sunlight is turning your subject into a hero. If you knew exactly when that moment of truth was going to happen, you'd be a true camera master.
Or course, most of us don't have psychic abilities, but we do possess a minor form of clairvoyance that allows us to see into the future. It's called anticipation.
In photography, looking into the future involves imagining with high probability how the scene will play out in a time that's later than "right now." It's seeing a convergence of light, moment and subject in your mind that might happen, and then working backwards to make it happen.
Most great images form some anticipation, whether it's noticing how the light will hit your sbuject in a few minutes, paying attention to how your subject and bakground will look when lined up as two-dimensional images, or recognizing when and where the height of action of expression might occur.
The anticipation of great images, it's almost like a nagging feeling we have until that moment comes when we press down on the shutter button. So what, do we just stand there and start snapping away...no. Using your imagination and invisioning the image before it came together, so you may not be clairvoyant but you did somehow see the shot before it happened.