# Task 7: Define positive impact metrics

**Plan**: measure-positive-impact
**Status**: DONE
**Deliverable**: New section in `impact-methodology.md`

## What to do

1. Add a "Positive Impact" section to `impact-methodology.md` defining
   proxy metrics:
   - **Reach**: number of people affected by the output.
   - **Counterfactual**: would the result have been achieved without
     this conversation? (none / slower / not at all)
   - **Durability**: expected useful lifetime of the output.
   - **Severity**: for bug/security fixes, severity of the issue.
   - **Reuse**: was the output referenced or used again?

2. For each metric, document:
   - How to estimate it (with examples).
   - Known biases (e.g., tendency to overestimate reach).
   - Confidence level.

3. Add a "net impact" formula or rubric that combines cost and value
   estimates into a qualitative assessment (clearly net-positive /
   probably net-positive / uncertain / probably net-negative / clearly
   net-negative).

## Done when

- The methodology document covers both sides of the equation.
- A reader can apply the rubric to their own conversations.