Tarot: the arcana, how a reading actually works, and why it doesn't need to be fortune-telling

Tarot tends to get pushed into one of two corners. For some, it's a direct line to the future. For others, it's nonsense for people who like fooling themselves. Both positions share the same mistake, treating tarot as if the only question that mattered was whether it predicts the future.

There's a more interesting question with a much sturdier answer, which is what's actually happening when someone draws a card and feels it tells them something true. This piece covers what the 78 arcana are, where tarot came from and how it turned into an oracle, how a reading unfolds in practice, and what psychology knows about the mechanism that makes it feel accurate.

What tarot is, and what it wasn't at first

Tarot began in Italy, in the mid-fifteenth century, as a card game. Historians at the Metropolitan Museum trace the earliest decks, known as carte da trionfi, to the courts of northern Italy in the 1440s, commissioned by families like the Visconti and the Sforza to play a trick-taking game close to what would later become bridge. The oldest deck that survives nearly complete, known as the Visconti-Sforza, already had the structure that's still standard today: 78 cards split between suits and a separate set of trump cards.

For more than three hundred years, nobody drew tarot cards to predict anything. It was a parlour game for the aristocracy, and nothing in the records from that period suggests any other use.

How a card game became an oracle

The turn happened in France, at the end of the eighteenth century, and it has a precise name and date attached to it. In 1781, the scholar Antoine Court de Gébelin published Le Monde Primitif, arguing that tarot's images preserved the lost wisdom of Egyptian priests, disguised as a deck of cards to survive the destruction of the Library of Alexandria. There wasn't a single piece of historical evidence behind the claim. Ancient Egypt had no connection to tarot, which was born in Renaissance Italy some twelve hundred years after the last Egyptian dynasty. The theory caught on anyway, and one contributor to that same book, the Comte de Mellet, went further and proposed the first divination technique using the cards.

A few years later, Jean-Baptiste Alliette, who published under his surname reversed as Etteilla, took that Egyptian premise and built on it the first deck designed from the ground up for fortune-telling, published in 1789. Etteilla became history's first professional tarot reader. From that point on, divinatory use eclipsed the card-game use almost entirely, which faded out except in a handful of European regions.

That timeline is worth holding onto, because it dismantles a common claim, that tarot is ancient Egyptian wisdom. It's considerably more recent European invention, built on a myth fabricated in an Enlightenment scholar's study. That doesn't make it less interesting. It just makes it what it actually is, rather than what it sometimes gets sold as.

The 78 arcana: how they're organised

A tarot deck always has 78 cards, split into two groups with different jobs.

The 22 Major Arcana, numbered 0 to 21, from the Fool to the World, represent broad life themes: transitions, values, fears, growth phases. It's the part of the deck most associated with tarot in popular culture, with cards like Death, the Hanged Man or the Wheel of Fortune, which rarely mean what their name literally suggests.

The 56 Minor Arcana split into four suits, traditionally Cups, Wands, Swords and Pentacles, with fourteen cards each, Ace through Ten plus four court cards (Page, Knight, Queen and King). Unlike the Majors, they deal with everyday life: a difficult conversation, a money decision, a tired stretch. It's the structure closest to an ordinary deck of playing cards, which it actually descends from.

For centuries, only the Majors had full illustrations. The Minors looked like an ordinary deck, with repeated symbols and no scene at all, which made reading them dependent on memorising lists of meanings. That changed for good in 1909, when occultist Arthur Edward Waite commissioned a full deck from Pamela Colman Smith, an artist and illustrator who also worked in London theatre alongside Bram Stoker. Smith had complete freedom over the Minor Arcana and turned them into small narrative scenes, with people, gestures and landscapes on every card. The result, known today as the Rider-Waite-Smith deck, made it possible to read the deck intuitively straight from the imagery, without memorising tables, and it remains the most reproduced and most copied deck in the world. Smith, despite that, spent decades with almost no credit for the work.

How a reading actually unfolds

Stripped of the mystical varnish, a tarot reading has a simple structure worth describing plainly.

1. A question or a focus area gets framed. Open questions ("what do I need to see about this phase") tend to produce more useful readings than closed yes-or-no ones ("will I stay with this person").
2. The cards are shuffled and a number are drawn, depending on the spread chosen. The simplest uses three cards, for past, present and future, or for situation, obstacle and advice.
3. The cards land in fixed positions, and each position carries its own role in the interpretation, independent of which card ends up there.
4. The reader, or the person themself, interprets the image in light of the position, the question and the other cards present, weaving it all into a narrative.

What happens in that fourth step is where things get psychologically interesting, and it's also where most of the misunderstandings about tarot come from.

What research says about why it works

Let's be direct about one thing first. There's no scientific evidence that tarot cards carry any predictive power over future events, or any channel of information beyond what's already available to whoever is doing the reading. This isn't opinion. It rests on the consistent absence of above-chance results across every controlled test that has set out to check the claim.

What does exist, and it's interesting in its own right, is a well-described psychological mechanism explaining why a reading can feel accurate without anything supernatural involved.

Projection onto an ambiguous stimulus. Researcher Inna Semetsky described tarot, in a 2006 article in Spirituality and Health International, as a projective technique, in the same family as the Rorschach inkblots: an image ambiguous enough invites whoever looks at it to fill the blanks with their own internal material, memories, worries, unresolved conflicts. The card doesn't know anything about you. Your interpretation of it is what carries information, and that information was already with you before the card got turned over.

The Barnum effect. In 1949, psychologist Bertram Forer ran a now-classic experiment. He gave his students a personality test and, a week later, handed each of them what he described as an individual analysis of their results. He asked them to rate the description's accuracy on a scale of zero to five. The average came out at 4.3. Only then did Forer reveal that every student had received the exact same text, assembled from vague lines lifted out of a newsstand astrology book, things like "you have a great need for other people to like and admire you." He called the phenomenon the fallacy of personal validation, which is also the title of the paper he published it in that year. The name that stuck later was the Barnum effect, after the circus showman famous for having something for everyone. It's the same mechanism that makes a tarot card feel written just for you, when it's actually vague enough to fit almost anyone going through a similar life stage.

Cold reading. Psychologist Ray Hyman gave a detailed account, in a 1977 essay, of the technique known as cold reading, the process by which someone convinces another person that they know everything about them without any prior information at all. Hyman distinguishes a static version, a generic script prepared to serve any client, from a dynamic version, built in real time from the listener's reactions. In a tarot reading, especially one with back-and-forth between reader and client, this second version kicks in. The person receiving the reading confirms, without noticing, the parts that fit, discards the ones that don't, and the reader adjusts the script to those subtle cues. The result feels like external accuracy. In most cases, it's internal collaboration.

It's worth noting, precisely, that Carl Jung discussed tarot in a 1933 seminar, describing it as an attempt to symbolically represent the contents of the unconscious, and he recognised an intuitive value in it for reading the present moment. Jung never developed this into a formal theory, nor did he propose tarot as a clinical instrument. It's a one-off observation from an influential thinker, not scientific validation, and it deserves to be cited as exactly that.

The qualitative evidence available on tarot's therapeutic use also deserves precise treatment. There are reports that sustained use, folded into counselling as a projective technique, is associated with a greater sense of control over one's own life. Studies comparing tarot directly against simpler reflective practices, like structured journaling, haven't found a clear edge for tarot over them. In other words, the value seems to sit in the reflection the exercise triggers, not in some special property of the cards themselves.

Using tarot with a critical eye

None of this means putting the deck in a drawer. It means using it for what it's actually good at.

• Treat the card as a question, not an answer. Instead of "this is going to happen," try "what does this image make me notice that I already knew and hadn't put into words."
• Be wary of readings vague enough to apply to anyone. If the line would fit three of your friends equally well, in completely different life stages, it's probably the Barnum effect at work, not the card.
• Use it to open a conversation with yourself, not to close a decision. Important decisions gain more from concrete information and honest conversation than from a three-card spread.
• Write down what the reading made you think, not just what the card "said." It's that written reflection, more than the card, that comes closest to what the research on self-knowledge shows actually has value.

Used this way, tarot sits on the same shelf as a birth chart or a personality test, a symbolic language that helps name what you already felt and hadn't put into words yet, not a substitute for the work of actually knowing yourself.

The takeaway

Tarot is a fifteenth-century card deck that turned into an oracle in the eighteenth century, courtesy of an Egyptian myth with not a single piece of historical evidence behind it. The 78 arcana, 22 Majors and 56 Minors, work less like a window into the future and more like a structured mirror, using ambiguous images to surface what you were already carrying.

What makes a reading feel accurate has a name: projection onto an ambiguous stimulus, the Barnum effect, cold reading, and none of them require anything supernatural to explain the feeling. Knowing that doesn't ruin the exercise. It makes it honest, and honesty is what separates a reflection tool from a promise the cards were never going to keep.

Frequently asked questions

Does tarot have Egyptian origins?

No. It's a myth invented in 1781 by Antoine Court de Gébelin, without historical evidence. Tarot began as a card game in Italy in the mid-fifteenth century, more than a thousand years after the end of Ancient Egypt, and only gained divinatory use at the end of the eighteenth century, in France.

How many cards are in a tarot deck?

Seventy-eight. Twenty-two Major Arcana, numbered 0 to 21, representing broad life themes, and fifty-six Minor Arcana, split into four suits of fourteen cards, describing everyday situations.

Does tarot have a scientific basis as a predictive method?

No. There's no evidence that the cards predict future events. What research describes is a psychological mechanism, projection onto ambiguous images, the Barnum effect and cold reading, that explains why a reading can feel accurate without any real predictive power.

What's the difference between the Major and Minor Arcana?

The Majors deal with underlying themes and life transitions, like growth, fear or change. The Minors, split into four suits, deal with concrete everyday situations, closer to the structure of an ordinary deck of playing cards, which they actually descend from.

Does it make sense to use tarot for self-knowledge, even without believing in fortune-telling?

It does, if treated as a projective technique rather than an oracle. The ambiguous images invite you to project onto them what you already feel, and that can open up useful reflection. The available research doesn't show tarot outperforming simpler practices, like structured journaling, but it doesn't invalidate using it as a starting point for thinking either.

Agapone reads the cosmic as a symbolic layer within the Profile DNA, crossed with more empirical layers of your personality and your relationships, never as an isolated verdict. If you want to see that cross-reading in practice, visit Agapone and explore your profile.