One specific detail trumps a thousand superlatives.

This advertisement points to Rolls-Royce as the pinnacle of luxury without resorting to empty superlatives (you’d expect to sell a car by saying it’s the fastest, greatest, or newest).

Instead of proclaiming the car as the best, it provides one vivid, measurable detail—the near-silent hum of an electric clock. “Loudest” is the only superlative in the entire description of the car, and to say that the clock makes the loudest noise in the car implies an unparalleled standard of engineering, refinement, and comfort.

What makes this line extraordinary is not what it says, but what it leaves unsaid. The reader fills in the gaps, imagining every aspect of the car—its performance, materials, and design—exemplifying perfection. By focusing on one detail, this technique transforms an unexpected and otherwise boring specification into an enduring symbol of quality.

This goes beyond advertising. In all writing, not just copywriting, specificity is persuasive because it lets the audience draw conclusions for themselves. One precise detail resonates louder than a paragraph of brag-worthy design features.