> For the complete documentation index, see [llms.txt](https://size.club/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://size.club/docs/playing-a-trial/why-the-formula-is-private.md).

# Why the formula is private

We publish what gets measured and which direction each part counts. We do not publish how the parts are weighted.

The reason is the same one a credit bureau has for publishing score bands but not its formula: publish the formula and people optimise the formula instead of getting better. In a game with real funded accounts on the line, a published formula is a cheat sheet for scripts and grinders, and the people it hurts most are honest traders competing against them.

Keeping the recipe private is player protection.

## Judge the engine by what is public

* The rules of every Trial, published before you play.
* [The six habits the score rewards and the three that drag it down](/docs/playing-a-trial/how-scoring-works.md), stated openly.
* [Your Grading](/docs/playing-a-trial/your-grading.md) after every run: where you ranked on each part of your trading, and what to fix, read from your own trade log.

You always know what is being measured and what to do about it. The only thing withheld is the exact arithmetic that would let someone farm the score without trading well.


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