Sometimes you have intuitive insight about how you think things are going to be, and you write that. Other times you fantasize completely, which has nothing to do with predicting the future.
Ray BradburyWhy all this insistence on the senses? Because in order to convince your reader that he is THERE, you must assault each of his senses, in turn, with color, sound, taste, and texture. If your reader feels the sun on his flesh, the wind fluttering his shirt sleeves, half your fight is won. The most improbable tales can be made believable, if your reader, through his senses, feels certain that he stands at the middle of events. He cannot refuse, then, to participate. The logic of events always gives way to the logic of the senses.
Ray Bradbury