I believe tarot gives insight into what is going on around you at the time past/present and future events which are already in progress they can advise as to how things are going in your life and enlighten you to things that effect you that you didn't know about but not tell the future

as this can change with the very smallest of things

throwing a reading in another direction

anything not directly related to the cards, that is picked up in a reading would be psychic

and that could tell of a future event
