What Saju cannot do

This chapter exists because the alternative is dishonest, and because you will trust the other eleven chapters more if this one is here.

It cannot predict events

Saju describes conditions, not outcomes. It can say a decade applies pressure to your work life. It cannot say you will be fired in March. Any service that produces specific event predictions is generating them, not deriving them.

It cannot settle its own disagreements

The strong/weak judgement — the single most consequential call in a reading — is genuinely contested between schools. So is the treatment of the 23:00 hour. So is the weighting of hidden stems. These are not fringe details; they change readings.

It is not evidence-based

There is no body of controlled research showing Saju predicts anything. It is a six-century-old interpretive tradition, and it should be held the way you would hold any other interpretive tradition: useful for reflection, not for decisions with real consequences.

It should not be used for certain things

Not for medical decisions. Not for legal or financial ones. Not for deciding whether to leave a relationship on its own authority, and not for deciding anything about another person who has not asked.

What it is genuinely good for

Structure. Most people have periods of their life that felt inexplicable at the time, and a framework that assigns those periods a shape is worth something even if you hold the mechanism loosely.

It is also unusually good at naming the specific friction in a life — the thing you keep doing, the kind of person you keep choosing — in language specific enough to be useful. Whether that comes from the calendar or from the act of being described carefully is a question you are entitled to leave open.

We would rather you read it that way than the other way.