Methodology

How we verify our numerology content

Version 1.0 · Last updated 23 September 2026

This method's arithmetic is checkable, so we check it before publishing — against the same code the free calculator runs, not against our own confidence in getting it right. This page explains how, and shows a case where the check caught us in an actual mistake.

1. Scope

This page covers the numerology arithmetic published on this site's blog and in the free calculator — the root number, the day master, the nine-palace occurrence grid, and the year, month, day and hour charts. It does not cover the rest of Habitus Mind.

2. What we check before publishing

Every arithmetic claim in a numerology article is checked against the same code that runs the free calculator — functions/_lib/numerology.js — not copied from another site, not asserted from memory, and not taken on the word of any source, ours included. If an article says two methods land on the same number, that claim was run, not assumed.

3. What "verified" means here

Two different kinds of check appear across these articles, and we say which one applies each time:

• Exhaustive testing. Where a claim could plausibly fail on some dates, we run it against a large, deterministic set and report the result honestly. The personal year article's claim — that this method's 流年 always equals the standard personal year number — was checked against every one of the 3,696 date-and-year combinations from 2020 to 2030. Zero disagreements.
• Mathematical proof. Some claims don't need testing because they follow from how digit-sum reduction works: repeatedly adding digits until one remains is equivalent to taking the remainder after division by nine, and that remainder is unchanged by how you group the digits before adding. That's why the root number always equals the Western life path number, for every possible date — not just the ones we happened to try.

4. A correction we made in public

An earlier draft of one article described this method's nine-palace occurrence grid (九宫) as the Lo Shu grid. It isn't. The Lo Shu grid tallies the digits of a birth date itself; this method's grid tallies twelve values the pyramid fold produces along the way — a different count from a different input.

We caught this by running both against the same worked example, 11 October 1994:

Near-inverted, for the same date. We corrected every affected sentence, in both languages, across the article and its tags, rather than leaving the looser wording in place because it was easier to explain to a reader who already knows the term "Lo Shu."

5. What we publish, and what we don't

These articles publish arithmetic and describe method. They do not say what any resulting number means — the high/low energy readings, the palace interpretations, the eighty-one two-digit combinations. That material is licensed practitioner text, not ours to republish, and it stays inside the Habitus Mind account rather than on a public page. An article that starts explaining what a number means has crossed a line we've deliberately drawn.

6. Check it yourself

The calculation isn't just described — it's public, working code. The exact script the free calculator runs is served directly from this domain, the same file for every visitor, and you can read every line of it. Run your own date through the calculator and compare it against the arithmetic shown in the articles; there's nothing hidden between the two.

7. Keeping this current

When an article's arithmetic changes, or the code it's checked against changes, we re-run the checks described above rather than assuming an old result still holds. This page is updated whenever that happens.

FAQ

How does Habitus Mind verify its numerology articles?

Every arithmetic claim is checked against functions/_lib/numerology.js, the same code that runs the free calculator at habitusmind.com/numerology-calculator/ — never copied from another source or asserted from memory. Claims that could plausibly fail on some dates are tested exhaustively; claims that follow from how digit-sum reduction works are proven mathematically.

Did Habitus Mind ever publish an incorrect numerology claim?

Yes. An earlier draft described this method's nine-palace occurrence grid (九宫) as the Lo Shu grid. It is not — the Lo Shu grid tallies the digits of a birth date itself, while this method's grid tallies twelve values the pyramid fold produces. Verified against the worked example 11 October 1994, the two are near-inverted for the same date. Every affected sentence was corrected in both languages.

Can I check the numerology calculation myself?

Yes. The exact script the free calculator runs is served publicly at habitusmind.com/number-method/numerology.js — the same file for every visitor, readable line by line, not merely described in prose.