> ## Documentation Index
> Fetch the complete documentation index at: https://docs.helix.ax/llms.txt
> Use this file to discover all available pages before exploring further.

# Evidence and Uncertainty

> How Helix keeps evidence, uncertainty, and customer decisions distinct.

Helix produces attributable evidence for a declared decision. It does not turn
every signal into a verdict or conceal what could not be established.

## Three independent dimensions

| Dimension            | What it establishes                                                   |
| -------------------- | --------------------------------------------------------------------- |
| Utility evidence     | How content may support the declared use                              |
| Risk evidence        | What sensitive or consequential meaning may be present                |
| Evidence sufficiency | What Helix could inspect and what was unsupported, partial, or failed |

These dimensions do not collapse into one score. Content can be useful and
sensitive at the same time. Low-risk content can still be irrelevant. A result
can also remain unresolved when evidence is insufficient.

## Preserve the denominator

A trustworthy result accounts for the complete authorized population, not only
the items that produced findings. Unsupported media, unavailable processing,
timeouts, failures, abstentions, and deliberate exclusions remain visible so a
reader can distinguish missing evidence from negative evidence.

## Keep provenance attached

Evidence is meaningful only with its basis: the source population, declared use,
admitted methods, processing state, and exact result. Preserving that chain
makes a decision reviewable and allows a later change to be compared with the
state that was actually approved.

<Info>
  Helix supplies evidence and preserves its basis. The customer supplies purpose
  and policy, makes the decision, and controls downstream use.
</Info>