The Do phase turns the hypothesis into action through a tightly scoped pilot. The goal is not a full rollout but a contained experiment that yields trustworthy data while shielding daily operations from disruption.
Throughout the trial, operators record both quantitative output and qualitative friction: points where the plan proved impractical, unforeseen bottlenecks, and improvised workarounds. In practice these frontline notes often explain more than the raw numbers do.
Key Concept
The Do phase runs the proposed countermeasure inside a restricted test environment while systematically capturing both performance metrics and operational friction.
Practical Example
An outpatient clinic trials a self-service check-in tablet at one reception desk for ten business days instead of removing paper clipboards across all six departments at once.
Standard Procedure
- 1Brief every participant on the trial mechanics and the reasoning behind it.
- 2Deploy the change within a strictly bounded scope — one shift, one station, or one pilot group.
- 3Capture metrics exactly as the Plan phase specified.
- 4Keep a live log of workarounds, snags, and unintended ripple effects.
Lesson Summary
- ✓The Do phase is a low-risk bounded pilot, not a full-scale launch.
- ✓Measurement follows the criteria fixed during planning, without improvisation.
- ✓Anomalies, obstacles, and workarounds are recorded as diagnostic evidence.