# Experiment Hypothesis Template

## Header

- Experiment ID:
- Experiment owner:
- Status:
- Decision date:

## Hypothesis

We believe:

Will cause:

To change by:

Because:

## Context

- What problem triggered this experiment?
- What evidence already supports this test?
- What has already been tried?

## Population

- Who is exposed?
- Who is excluded?
- Randomization unit:
- Traffic split:

## Primary metric

- Metric name:
- Current baseline:
- Minimum meaningful effect:
- Measurement window:

## Guardrails

- Guardrail 1:
- Guardrail 2:
- Guardrail 3:

## Decision rules

- Ship if:
- Kill if:
- Iterate if:
- Extend if:

## Segment cuts to review

- Segment 1:
- Segment 2:
- Segment 3:

## Rollback plan

- Rollback trigger:
- Who can trigger it:
- Can it be reversed instantly:

## Implementation notes

- Flag or release mechanism:
- Files or components affected:
- New events required:
- QA checklist: