When faced with a decision we lack technical expertise for, like buying a used car, our brains substitute a simpler question: "Do I trust the person selling it?" The seller's character heavily influences our valuation of the asset, often more than a technical inspection.

The brain's intuitive "System 1" is adept at sniffing out dishonesty. Using specific numbers like "71 people purchased" feels more credible than round numbers like "70+," which can seem fabricated. This specificity bypasses the brain's danger detector, builds trust, and increases conversion.

We are most influenced by people like ourselves. Instead of general popularity claims like '10,000 users,' specify how many customers are in the user's specific state or city. This tailored social proof creates a much stronger connection and is more persuasive.

Contrary to the belief that big B2B decisions are purely rational, they are more susceptible to biases. With infrequent, high-stakes purchases like enterprise software, decision-makers face greater uncertainty and are more likely to rely on mental shortcuts and biases like social proof.

Enterprise buying isn't purely rational. Marketers should open with emotion, inspiration, and vision to capture attention and build aspiration. Only after earning that attention should they follow up with the logic, security, and assurance needed to de-risk the decision for IT and procurement.

Even in B2B sales with long, data-heavy cycles, the final decision is not purely rational. After facts are collected (System 2), the choice is often triggered by an emotional "System 1" shortcut, like personal rapport with a salesperson or a senior leader's brand preference.

Humans naturally conserve mental energy, a concept Princeton's Susan Fisk calls being 'cognitive misers.' For most decisions, people default to quick, intuitive rules of thumb (heuristics) rather than deep, logical analysis. Marketing is more effective when it works with this human nature, not against it.

Nobel laureate Daniel Kahneman proved that 95% of human decisions are governed by "System 1"—an emotional, fast-thinking part of the brain. Marketers often craft rational messages (for "System 2") that fail because they don't appeal to System 1, which truly drives behavior.

Data suggests 80% of B2B ads are ineffective because they are just product marketing in disguise, listing features and data. Truly effective B2B creative must first appeal to the human heart and mind, even for complex, million-dollar purchases.