Where the trades came from.

The oldest sustained astronomical record kept for decisions is Mesopotamian. Enuma Anu Enlil is a series of about seventy tablets holding somewhere between six and seven thousand celestial omens, standardised across the Kassite and Middle Babylonian periods and copied through the Neo-Assyrian libraries of the seventh century BC.

It was not about anybody. The omens are read for the king and the state, and the questions are operational: when to begin a campaign, when to build a temple, what a harvest will do. Scribes read the sky and advised on timing, and that is the whole of it — there is no birth chart in Enuma Anu Enlil and no person in it either.

This is worth saying plainly at the start, because the modern version of this subject is almost entirely about the self. The first thousand years of it were about work, supply and the calendar of a state. What BRASSS does is closer to the older use than to the newer one.

Ptolemy's Tetrabiblos, second century, Book IV, chapter four — titled in English translation The Quality of Employment — is the surviving locus for reading a profession out of a chart. Ptolemy takes the question seriously enough to give it its own chapter, immediately after the chapter on rank.

His method is narrow and it is the one this engine still runs. The kind of work is distinguished by three planets only, Mercury, Venus and Mars, together with the signs they occupy. Mercury ruling the work gives writers, accountants, teachers, merchants and bankers, and generally those who live by explanation or interpretation. Mercury with Venus gives the theatre, instrument makers, painters, weavers. Mercury with Mars gives sculptors, armourers, physicians and surgeons.

Read that list again as an operator rather than as a historian. Explanation sold directly, things made by hand, work that cuts. Eighteen centuries later the categories still sort a market, which is either remarkable or a warning, and this page does not tell you which.

The Sanskrit tradition does something no other branch does: it builds a separate chart for the question. The tenth division, Dasamsa, cuts each sign into ten parts and rebuilds the whole chart from them, and that second chart is the one read for profession. The natal chart says who; the divisional chart says at what.

Timing is Vimshottari: twenty-seven nakshatras, nine period lords, one hundred and twenty years, entered at the longitude of the Moon at birth. A life is divided into long chapters — Venus twenty years, Saturn nineteen, Jupiter sixteen — and the chapter you are in is held to describe what the period is for.

Both of these are in the reading. The tenth division and its lord appear on the instrument page, and the current period and the one after it are what the timing section is written from.

Firdaria is Persian. The word fardar is Persian, the technique carries an Iranian background, and it reaches Islamic astrology through the transmission out of Sasanian Iran. It divides a life into nine successive chapters over a seventy-five year cycle, each governed by one of the seven planets or by a lunar node.

Its systematic description is attributed to Abu Ma'shar al-Balkhi, working in ninth-century Baghdad, whose work carried a great deal of Persian material into Arabic and from there into Europe. Al-Biruni records the technique too, in the Book of Instruction described below.

The idea underneath it is the one this product is built on: that a working life is not uniform, that it has seasons with different characters, and that knowing which season you are in changes what you should be doing in it.

Al-Biruni finished Kitab al-Tafhim li-Awa'il Sina'at al-Tanjim — the Book of Instruction in the Elements of the Art of Astrology — at Ghazna in 1029. It is a teaching text, written as questions and answers, and it is the most systematic surviving statement of the working method of its period.

Among the properties it assigns to each of the seven planets are the actions and professions that planet governs, alongside its metals, its animals, its climates and its diseases. A planet, in this scheme, is not a mood. It is a category of matter and of work, and the catalogue is specific enough to be argued with.

That specificity is the standard this product tries to hold. A reading that says you are creative has said nothing. A reading that names a trade, and the placement it came from, can be checked.

William Lilly's Christian Astrology, printed in London in 1647, is the last major English statement of the technique before it leaves professional life. Lilly is a working practitioner answering paid questions, and a great many of those questions are commercial: whether a voyage will return, whether a partner is honest, what trade a man should follow.

The line of transmission is direct and short. Ptolemy, then Paulus and Rhetorius in late antiquity, then the Persian and Arabic material through Abu Ma'shar and al-Biruni, then Bonatti and Schoener, then Lilly. The cascade this engine runs to find a lord of action is the same procedure, in that line.

Then it ends. Astrology detaches from commerce, spends three centuries becoming a personality language, and arrives in the present as an app about your feelings. Everything above was about work. That gap is the whole reason this product exists, and it is the only claim on this page with no citation, because it is an argument rather than a fact.