How do tarot cards work?
Even if you don't believe in magic, tarot cards can "work."
Many traditional forms of divination are straightforward. You throw runes that spell an answer, poke a finger at random into a bible, or feel around in a handful of animal guts. A question is asked, and an answer is given. Someone may or may not stare into a crystal ball or bowl of water.
By comparison, the tarot cards are far more than a simple fortune telling tool. Many people use them to find answers about the future, and those answers can be found. But the tarot cards also act as a set of psychological prompts, which ask the questioner to consider things in a broader scope. Tarot cards don't just "tell your fortune," they also ask you to consider what the future means, what forces will shape it, and what part you yourself will play in bringing that future to bear.
There is no single explanation for how the tarot cards work, meaning the mechanism by which you end up drawing the correct (i.e. relevant) cards from the deck.