Divination is a large word covering practices with almost nothing in common except their purpose. A Chinese text consulted by casting yarrow stalks, a deck of 36 everyday pictures read in pairs, sixteen figures derived by arithmetic from marks in sand, and a weighted string held over a chart are not variations on one idea.
They were never designed as a family. They come from different centuries, different places, and different jobs, and the structure of each one follows the job it was built for. Knowing which job you are buying is most of what this article is for.
Card Based Methods
The card methods are the ones most people meet first, and they differ from each other more than their shared format suggests.
Tarot: a 78 card deck of four suits and a trump sequence, read through a large and contested body of meanings. It tends to answer what is going on in a situation.
Lenormand: a 36 card deck of plain objects, Rider, Ship, House, Snake, Coffin, Key, read in combinations rather than singly. It tends to answer what, specifically, and when.
Oracle cards: any deck with no fixed structure. Any number of cards, any theme, meanings written by whoever made it and supplied in its own booklet.
Playing card cartomancy: divination with an ordinary 52 or 32 card deck, where suits carry subject areas and the courts stand for people.
Two of those come with a history worth correcting. Lenormand cards are not Marie Anne Lenormand’s. She was a real and famous Parisian fortune teller who died in 1843, and the deck derives from a Nuremberg parlour race game of about 1799 called the Game of Hope, whose images and numbers are the ones still printed today. Her name was attached to the cards after her death as marketing.
And playing card reading came first. The earliest published systematic card divination method used a 32 card piquet deck, not a tarot deck, and most modern tarot technique descends from it.
The tarot half of this, with its own deck families and its own invented history, is in what is tarot? decks, systems, and reading styles.
Text and Lot Based Methods
Casting lots is the oldest family here. An outcome reached by apparently random means is taken to reveal something, and the practice appears in the Hebrew Bible, in Greek and Roman religion, and across the world.
The I Ching, the Book of Changes, is the most developed form of it. A cast produces one of 64 hexagrams, each six stacked lines which are broken or unbroken, and lines are sometimes changing, which produces a second hexagram and so a movement from one situation to another. The core text is dated by modern scholars somewhere between the tenth and the fourth centuries BCE, with the commentaries substantially later.
Bibliomancy is the simplest member of the family: open a book, usually a sacred one, at random and take the passage found. The practice is documented for Virgil and for the Bible, and it is still in ordinary use.
The I Ching’s Two Methods Produce Different Answers, and This Is Measurable
This is the strongest single fact in the whole subject, and it is arithmetic rather than opinion.
The older yarrow stalk procedure produces changing lines unevenly. Broken lines are about three times more likely to be changing than unbroken ones, and stable lines outnumber changing ones by roughly three to one. The three coin method, which spread widely in the Tang dynasty, is symmetrical: each kind of changing line is equally likely and changing lines are more frequent overall.
So coins yield readings with more transformation in them and stalks yield more settled ones. Same question, same person, same text, different physical procedure, systematically different weighting between this situation is in flux and this situation is stable. Practitioners are aware of it and argue about it.
Runes
Runes are real. The Elder Futhark is a 24 character alphabet used for Germanic languages roughly between the second and eighth centuries, arranged in three groups of eight, and it is thoroughly attested in inscriptions.
Rune divination as practised today is largely a twentieth century reconstruction. The one classical citation everybody reaches for is Tacitus, writing around 98 CE, describing Germanic peoples cutting strips from a tree, marking them with certain signs, scattering them on a white cloth and interpreting three. He does not say the marks were runes, and the earliest runic inscriptions come after him.
The modern revival largely runs through a 1982 book which took its interpretive structure substantially from the I Ching rather than from Norse sources, did not use the historical rune order, and added a blank rune with no historical precedent. Most sets sold still include the blank. Practitioners working from the medieval rune poems generally reject the whole approach, and the split is live.
Figure Based Methods
Geomancy generates sixteen figures, each four rows of one or two dots, from an initial random process: originally marks poked in sand, later dots on paper. Further figures are derived from the first four by strict arithmetic into a chart, often with an astrological layer on top.
The developed system comes from the medieval Arab world, where it is the science of the sand, and reached Europe through Latin translations made largely at Toledo in the twelfth century. The English word comes from one of those translations. The West African Ifá tradition and the Malagasy sikidy are related divinatory families worth knowing about, and the direction of influence between them is not something research settled.
One correction, because the word gets misused. Geomancy in English is sometimes applied to Feng Shui. They are unrelated practices.
Instrument and Perception Based Methods
A pendulum is a weighted object on a string, read from its movement, usually for yes and no answers or to locate something. Dowsing uses a rod for the same purpose. The explanation offered in the mainstream literature is the ideomotor effect, small unconscious movements by the person holding it, and there is no accepted evidence the practice locates anything. The largest test, run in Munich in the late 1980s, produced a result its lead investigator and its critics read in opposite directions, and the disagreement is about how to interpret one dataset.
Scrying is gazing into a reflective or translucent surface, a crystal, a black mirror, water, ink, until images are perceived. It has a long documented history. John Dee, mathematician and adviser to Elizabeth I, worked from 1582 with a scryer named Edward Kelley, who gazed into a stone and an obsidian mirror while Dee questioned and recorded. The mirror survives in the British Museum and turns out to be Aztec, brought to Europe after 1521.
Three Useful Ways to Sort All of This
One list will not organise these practices, because they differ along more than one axis at a time. Three questions do the work.
Is the method tool based or perceptual? Tarot, Lenormand, the I Ching, runes, geomancy and dice use a physical randomiser producing a result independent of the reader’s state. Mediumship, scrying and intuitive reading use the practitioner’s own perception as the instrument. The pendulum sits awkwardly between the two, because it is a tool moved by the holder’s own body.
Is it rule governed or open? Geomancy derives its figures by strict arithmetic. The I Ching hands you a printed passage. Lenormand has a fixed combination grammar. Modern tarot has a large shared vocabulary and no enforced rules. Oracle cards and scrying supply almost nothing, and the reader supplies the meaning.
Is it question led or open? The I Ching, geomancy, horary astrology and the pendulum want a single formed question before anything is cast. A general tarot reading or a mediumship sitting does not, and mediumship in particular cannot be steered at all.
A fourth question is worth adding because it decides how much the practitioner matters: who supplies the meaning? The text supplies it in the I Ching and in bibliomancy. The system supplies it in geomancy, Lenormand and numerology. The tradition supplies it in structured tarot. The reader supplies it in intuitive tarot and scrying. And in any reading built on you confirming or denying, some of it comes from you.
What Choosing a Method Changes
The practical answer, for somebody deciding what to book.
- How much is fixed before you arrive. A printed passage is auditable afterwards. A contested vocabulary is less so. An oracle deck gives you whatever its creator wrote.
- The genre of the answer. Lenormand and geomancy answer what, specifically. The I Ching answers how to conduct yourself. Modern tarot answers what is going on. Numerology answers what kind of person and what season. Mediumship answers no question at all.
- Whether you have to formulate a question. Question led systems force you to write one answerable sentence, which is a large part of the value and happens before the reading starts.
- How much of the outcome is the practitioner. At the geomancy and I Ching end, two competent practitioners with the same cast should broadly agree. At the intuitive and oracle end, two practitioners will differ, because the method routes through them by design.
- Even the randomiser. The I Ching coin and stalk difference is the demonstrable case.
- What the answer invites you to do. A prediction invites waiting. A conduct answer invites acting differently. A character answer invites self explanation.
What no method changes is the underlying position. None of these has been shown to produce information nobody in the room already had. What varies between them is the structure of the prompt, the vocabulary of the answer, and where the interpretive authority sits.
Choosing One
Work backwards from the shape of answer you want. A specific practical question with a date attached suits a question led, rule governed method. An open situation you want described suits tarot. A decision about how to behave suits the I Ching. Wanting a person’s insight rather than a system’s output suits an intuitive reader, and the consistency you give up is the point rather than a flaw.
Whichever you choose, the questions to ask the practitioner are the same, and they are in the 11 questions worth asking before a reading.