Using specific, non-round numbers in claims makes them seem more accurate and credible. Consumers subconsciously associate precision with expertise, whereas round numbers can feel like casual estimations. This effect was demonstrated in a study where a deodorant claim of '47% reduction' was rated as more credible than '50% reduction'.

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Deceivers hijack our trust in precision by attaching specific numbers (e.g., "13.5% of customers") to their claims. This gives a "patina of rigor and understanding," making us less likely to question the source or validity of the information itself, even if the number is arbitrary.

Contrary to the belief that messaging should be universally simple, Hexagon discovered that using specific, technology-oriented terms led to higher user engagement, dwell time, and click-through rates. This suggests users prefer concrete language over vague, high-level concepts, even if not every term is relevant to them.

Vague stories can sound fabricated. Including specific, non-round numbers or precise facts (e.g., "it was 4.2" instead of "around 4") makes a narrative feel more authentic and tangible. This grounds the story in reality and enhances the salesperson's integrity and credibility.

Bupa's Head of Product Teresa Wang requires her team to explain their work and its value to non-technical people within three minutes. This forces clarity, brevity, and a focus on the 'why' and 'so what' rather than the technical 'how,' ensuring stakeholders immediately grasp the concept and its importance.

The 'Pratfall Effect' suggests showing a flaw can make a person or brand more appealing. However, this has a major caveat: it only works from a position of strength. A competent brand like Guinness can highlight its slow pour time as a virtue. An incompetent brand admitting a flaw simply confirms its incompetence, making the situation worse.

For sophisticated consumers, branding based on unsubstantiated luxury materials can create skepticism. A marketing message focused on scientific proof, tangible benefits, and performance can be more compelling and build greater trust, especially for a high-price-point product.

Perfection is often perceived as 'too good to be true', leading consumers to suspect that negative reviews have been removed. A Northwestern University study of 100,000 reviews found a tipping point, typically between 4.2 and 4.8 stars for FMCG products, after which purchase likelihood begins to decline. An imperfect score is more believable.

Replace generic praise like "we love this product" with testimonials that feature specific, quantifiable outcomes ("saved 12 hours a month"). This helps prospects visualize concrete benefits and can increase conversion rates by over 15%.

The way a price is presented alters a consumer's emotional response, even if the total cost is identical. Breaking a large sum into smaller installments, like Klarna does, makes it feel more manageable and less intimidating, thus boosting sales.

When faced with the complex task of judging a product's quality, consumers often substitute a simpler question: how much effort went into making it? By highlighting the 5,127 prototypes, James Dyson masterfully signals immense effort. This 'labor illusion' imbues the final product with a perception of higher quality and justifies its premium price, even though the effort itself is irrelevant to performance.