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The Rule of Three: cognitive science for B2B communication
Three is the most defensible number in high-stakes B2B communication because of converging evidence from cognitive science, persuasion research, and decades of elite practitioner validation. The human brain's working memory holds roughly 3–4 complex chunks at once (Cowan, 2001; 2010), and persuasion research demonstrates that a fourth claim actively triggers skepticism rather than adding value (Shu & Carlson, 2014). This creates a powerful strategic implication: presenting
Massimo Erba
Mar 1712 min read
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