Direct answer
The Pawade study supports a useful teaching pattern—build, measure, discuss and revise—but its design cannot prove that SEO caused the traffic change or that density targets work.
Practical steps
- Document starting state.
- Change bounded variables.
- Use appropriate measurement.
- Peer-review interpretation.
Common mistakes
- Reusing density advice.
- Mixing many changes.
- Treating self-report as mastery.
Limitations
- One uncontrolled cohort.
- Inconsistent periods and possible referral traffic.