Thirty-six points, and what they actually weigh

Thirty-six is not a scale. It is a sum, and you can do it on your fingers.

The system families use to compare two people before a marriage is called aṣṭakūṭa (अष्टकूट): eight kūṭas (कूट), eight headings. Running it is guṇa milāna (गुण मिलान), the matching of gunas. Each heading carries a fixed number of points. The first is worth one point, the second two, the third three, and so on up to the eighth, which is worth eight. Add one to eight and you get thirty-six. That is the entire origin of the number every family quotes.

Sit with that before looking at any single heading. Nobody measured eight things and found that one of them counted eight times as much as another. Somebody ranked eight things, then used each one's place in the queue as its score.

Now walk the ladder from the bottom.

Varṇa (वर्ण), one point, is read off the rāśi (राशि), the moon sign: the sign the moon stood in at birth. The twelve signs are sorted into four classes carrying the names of the four varnas, water signs placed highest and air signs lowest. It is said to measure ego and spiritual compatibility. Its rule is not symmetrical. The standard statement of it gives the point when the boy's class is equal to or above the girl's, and withholds it only when hers is above his. The heading that runs on rank is worth least of the eight, and it is the only one that reads differently depending on which of the two people you are.

Vaśya (वश्य), two points, also from the moon sign. The signs are grouped as human, four-footed, water-dwelling, plus the lion alone and the scorpion alone. The published tables are explicit that the groups are judged as controllable and as edible, one class against another. It is said to measure attraction and mutual influence. The axis underneath it is which animal eats which.

Tārā (तारा), three points, is the first heading taken from the birth star, the nakṣatra (नक्षत्र), one of twenty-seven equal slices of the moon's path. Count from one person's star to the other's, divide by nine, keep the remainder, then count back the other way. Some sources disqualify the odd remainders; others disqualify three named positions out of nine. The two rules do not catch the same couples.

Yoni (योनि), four points. Each of the twenty-seven stars is assigned an animal, fourteen animals in all, and the pair is graded by how the two animals get on: full marks for the same animal, nothing at all for a pair counted as sworn enemies, cat and rat, snake and mongoose. It is said to measure sexual compatibility.

Graha maitrī (ग्रह मैत्री), five points, takes the two planets that own the two moon signs and reads their friendship off a fixed table. It is said to measure mental rapport.

Gaṇa (गण), six points, sorts the stars into three temperaments, deva, manuṣya and rākṣasa, and scores the pair from the resulting grid.

Bhakūṭa (भकूट), seven points, takes the two moon signs and counts the distance between them. Certain distances score zero. Everything else scores the full seven.

Nāḍī (नाडी), eight points, sorts the twenty-seven stars into three groups of nine. Same group, zero. Different groups, eight.

Two facts fall out of that walk, and neither is a secret. Every one of the eight headings is computed from a single body: the moon. Not the ascendant, not Venus, not Jupiter, not the seventh house, not the running daśā (दशा) period. The whole thirty-six is a lookup on two moon positions, each rounded down to a star and a sign.

The rounding is severe. Twenty-seven stars, with nine of them split across a sign boundary, give thirty-six possible star-and-sign combinations, and that is all the grid knows of a person: which one of the thirty-six they are. The two thirty-sixes are a coincidence. I mention the one on the input side only to show how little of anybody the grid takes in before it starts scoring them.

The two switches

Look again at the top of the ladder. Bhakoot is seven points, nadi is eight, and neither is graded: each is full marks or nothing. Fifteen of the thirty-six points, more than a third, sit in two switches with no middle position.

The arithmetic of how often they trip is simple enough to do here. Nadi sorts twenty-seven stars into three groups of nine, so if birth stars fell evenly across a population, one couple in three would land in the same group and score zero. Bhakoot counts the distance between the two moon signs, and six of the twelve possible counts are the disqualifying ones, so roughly half of pairings would fail it. Both fractions are approximate. The moon does not travel at a constant speed, so births are not spread perfectly evenly across the stars, and both headings carry cancellation rules that let some couples off. I will not multiply the two together into one figure either, since both are read off the same moon and are not independent. What survives that caution is enough. Neither of these is a rare finding.

Each of those two switches has its own literature and its own trade, and each needs a separate accounting.

Now put the switches and the score in the same room. A couple that fails both can still take everything else, so their ceiling is twenty-one. That is above the eighteen families quote as a pass mark, and exactly where the band Drik Panchang's table calls "very good" begins. The same page then gives a second set of bands to be used when bhakoot has failed, and states plainly that if nadi has failed, even twenty-eight points is not an auspicious match.

Read that as honesty, not as a contradiction. The people who publish these tables are telling you, in public, that the total is not the instrument. The bands get rewritten when a switch flips, and one switch overrides the total outright. The number out of thirty-six is a summary of six headings that do not decide, plus two headings that do.

If the switches decide, what is the number for?

What a number can do that a judgement cannot

Start with what is documented. The eight headings and their weights are standard across the medieval muhūrta (मुहूर्त) manuals on choosing a time to act, and across every modern handbook printed since. That much is not in dispute. What I could not establish is when the weighted list summing to thirty-six was first set out, and by whom. I did check the obvious place. Varāhamihira's marriage chapter in the Bṛhat Saṁhitā, sixth century, is about the hour of the wedding: which planets sit where while the ceremony is performed. It compares no birth charts and contains no kutas. The handbooks usually point to the Muhūrta Chintāmaṇi (मुहूर्त चिन्तामणि), a manual from around 1600, as the source of the weighted list, but I have not been able to confirm the list in that text itself, and I am not going to assert what I have not seen. A scoring system that governs marriages across a subcontinent has, at present, no first page anyone can show you.

Nor is thirty-six the tradition. Across the south the same job is done with a different list, ten poruthams (a Tamil word for fitness or agreement), judged one at a time as suitable or not rather than added up, and the rules for working out several of them differ between Tamil and Kerala practice. Two grammars can give two answers about the same couple. Rukmini has written about the sky having several grammars in her piece on the schools; this is that argument arriving at somebody's door with a decision attached.

So follow the incentive, which is not in doubt.

A number is portable and a judgement is not. Everything else an experienced person might say about two charts needs that person in the room, answering follow-up questions. The score needs none of that. It fits in a message. It can be repeated by an uncle who has never opened a book. It can be set beside the next candidate's score, which is something no judgement can be. Of everything in a reading, exactly one part survives being forwarded, and it is the number.

A number also refuses on your behalf. A family that does not want a match has to say something, and most of the real reasons are things nobody will say in front of the other family. A count of sixteen out of thirty-six does not have to be defended. Nobody's taste is on record, nobody has insulted anybody, and the conversation is over. None of that requires a single person in the chain to be dishonest. It only requires the number to exist, and the number is free.

Free is the word to hold on to. Every large matrimonial platform now computes this score for nothing, instantly, from two sets of birth details, and shows you the eight headings broken out. The score is the shop window. It costs almost nothing to produce and it brings a worried person to a counter. What has a price is the other side: the failed switch, the second opinion on the failed switch, the correction for the failed switch. Most matching reports run the Mars check alongside the score, and I have been through that flag and its economics separately in the mangal dosha piece.

If a number is put in front of you, ask for the eight line items instead of the total. Twenty-four can mean six headings full and two thin, or a zero on one of the big two and near-perfect everywhere else. Those are not the same report. For every zero, ask which heading produced it and what that heading takes as its input. Sometimes the answer is that the two of you were born under stars that fall in the same group of nine. Decide for yourself what that establishes. Then ask the person quoting it what they would have you do differently if the number were four points higher. If the answer is a payment, you have learned what the reading was.

Add the numbers one to eight and you get thirty-six. That is a fact about the numbers one to eight. It is not yet a fact about anybody's marriage.