Light takes time to travel through space, you judge the here and now on what you see/hear/touch/smell. This means that when you look at the wall, you are seeing it slightly in the past, as it has changed during the period of time the light takes from initial departure, to arrival at the retina, then through all the neurological circuits in ure brain to be fedback and comprehended. So, if what you are perceiving as the present, is actually the past, then is what you judge to be the future, already happened?