Claim
The One-Liner is a single-sentence formula for answering "What do you do?" in three structured beats: the Problem the customer faces, the Solution you provide, and the Result they experience. The narrative shape, tension → resolution → transformation, makes the value proposition memorable in a way that feature-list or category-tag answers do not.
Mechanism
A category answer ("we sell HR software") is forgettable because it does not engage narrative cognition. A feature answer ("we automate onboarding") is forgettable for the same reason. The Problem-Solution-Result structure mirrors how humans remember stories: a hero in trouble (problem), a turning point (solution), and a new state (result). The listener stores the answer not as three facts but as a small story, which is dramatically more retrievable. This compounds across the buyer's journey, the One-Liner becomes the answer they repeat to colleagues when asked about the product.
Conditions
Holds when:
- The product solves a clearly-bounded problem with a visualisable result.
- The audience asks "what do you do?" in elevator-pitch contexts (events, intros, sales discovery openers).
- The problem and result can be stated without category-jargon.
Fails when:
- The product solves multiple unrelated problems, the formula collapses into a non-specific summary.
- The result is not easily visualised (most strategic / advisory work, where outcomes are diffuse).
- The audience is technical and prefers fact-density over narrative shape.
Evidence
"The One-Liner is a single-sentence formula for answering \"What do you do?\" that follows the structure: Problem, Solution, Result."
· see raw/expert-content/experts/donald-miller.md line 18.
Signals
- The team can state the One-Liner identically across employees, high agreement is the signal of clarity.
- Sales reps lead with the One-Liner in discovery openers and report higher early-stage engagement.
- Customer-facing copy threads (homepage hero, ad creative, email subject lines) are derived from the One-Liner rather than written independently.
Counter-evidence
For complex platforms with multiple use cases, forcing a single One-Liner can over-narrow the positioning. Multi-product companies often need multiple One-Liners, one per audience segment, which adds operational complexity. Anthony Pierri's Five-Second Trinity is more robust for category-positioned B2B SaaS where the "alternative" matters as much as the result.
Cross-references
- The customer is the hero. Your brand is the guide. If you confuse, you lose., Articulate the buyer's problem at three layers, external, internal, and philosophical, or your message rings shallow, the One-Liner is the compressed version of the StoryBrand seven-part framework.
- B2B homepages must communicate use case, alternative, and result in five seconds, Pierri's homepage equivalent (use case, alternative, result).