Root cause Quote by Sebastian Marshall
““The vehicle will not start. (the problem) 1. Why? The battery is dead. (first why) 2. Why? The accelerator is not functioning. (second why) 3. Why? The alternator belt has broken. (third why) 4. Why? The alternator belt was well beyond its useful service life and not replaced. (fourth why) 5. Why? The vehicle was not maintained according to the recommended service schedule. (fifth why, the root cause)””
About This Quote
A step-by-step analysis uncovers the root cause of a problem by repeatedly asking “why,” revealing deeper systemic issues.
In simple terms: Repeatedly ask why to find the true cause.
Use the five‑why method for troubleshooting.
Themes
Mood
Type
When to use this quote
- maintenance
- vehicle repair
- process improvement
- quality control
Key Concepts
Questions to Reflect On
- Is every problem worth a five‑why analysis?
- When should you stop probing?
The method can be time‑consuming for simple issues.