well, there is something called synchronicity. i believe Carl Jung brought this idea more to light or gave it more attention.
anyways, it's the idea that the universe has the answers for you, and things are connected in certain ways. like, you think about a friend you haven't heard from in 2 years, then you open up your email and there is a message from them. there is some underlying current of energy we are all riding and a part of. maybe coincidence, but why did you think about your friend
that moment or that morning of all mornings? intuition, maybe.
there is also a branch of Astrology - traditional Astrology called Horary. it's based on the idea that the minute you think of a question, the stars have the answer to that question. it's not something you can ask a slew of questions about. it's 1 at a time (because the planets don't change every second. well, they do, but not where they would form different answers). so, the basis of this is - you thought of a question at that moment. so there must be an answer that moment as well. that's when you draw up a chart and find the answer to the question on your mind.
similar for Tarot. fine, it seems like the cards are coming at random. and maybe they are. but maybe your energy is focusing on the questions that are in synch with the cards that are about to come up. why did you think to ask that particular question first, second, third, etc? why did you ask - "how is his current relationship", before you asked - "how does he feel about me"? were you in tune with something that intuitively you knew the first cards laid would be positive. or negative. and the second round would be different?
all of this gets into some really deep spiritual stuff, in my opinion. but i like the Tarot. i think it helps frame situations really well. i've thought, at times, you can make almost any card to fit any situation. i think this is why certain spreads are helpful, and using each placement of the card is important. whether is past/present/future 3-card spread, a celtic-cross, or something more personal.
also think this is why forming really concise questions is really important, esp if you aren't also using some sort of psychic gift. but i think the cards help to tap into energies you aren't necessarily seeing or wanting to see.