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

# Verifying Sources and Evidence

> How to verify the reliability of Wissly answers

The most important aspect when AI provides answers is being able to verify "Is this answer accurate?" Wissly clearly displays sources for all answers.

## How Sources Are Displayed

Source indicators are attached to information retrieved from documents in the answer.

```
Q3 2024 domestic revenue was 15.2 billion won. [1]

[1] Q3_2024_Performance_Report.xlsx
```

Clicking the number indicator (e.g., `[1]`) navigates to that document and highlights the relevant section.

## How to Check Sources

<Steps>
  <Step title="Click Source Number">
    Click the source number in the answer.
  </Step>

  <Step title="View Original Document">
    The original document opens in the viewer.
  </Step>

  <Step title="See Highlights">
    The section that supports the answer is highlighted.
  </Step>
</Steps>

## Why Source Verification Matters

<CardGroup cols={3}>
  <Card title="Prevent Interpretation Errors" icon="triangle-exclamation">
    AI may sometimes misinterpret document content.
  </Card>

  <Card title="Verify Recency" icon="clock">
    Information from older documents may not be current.
  </Card>

  <Card title="Discover Conflicts" icon="code-compare">
    Multiple documents may contain conflicting information.
  </Card>
</CardGroup>

Checking sources allows you to quickly discover these issues and judge for yourself whether information is accurate.

## When There Are Multiple Sources

If Wissly synthesized information from multiple documents, each source is displayed.

```
Company A's contract amount is 200 million won[1], and Company B's is 180 million won[2].

[1] Company_A_Contract_2024.pdf
[2] Company_B_Contract_2024.pdf
```

You can individually verify which document each piece of information came from.

<Card title="Internal Documents vs Web Search" icon="globe" href="/en/search/internal-vs-web">
  Learn when Wissly uses internal documents and the web.
</Card>