
TL;DR
Your buyer's brain can hold 4-7 things at once. You just showed them 47 slides. Do the math. When you exceed cognitive capacity, their brain starts dropping information to make room for new stuff. First they're engaged. Then confused. Then they check out. Then nothing sticks. The fix: structure beats volume. Surprise triggers dopamine and creates memory anchors. Give them at least one 'wait, you can DO that?' moment. And remember: they'll recall your opening and closing. Everything in the middle blurs. Lead with their problem, not your logo.
Cognitive Load: The 4-7 Chunk Limit
Your brain can only hold 4-7 pieces of information in working memory at once
This is a hard biological limit, not a suggestion. Your brain's working memory is like RAM. When you exceed capacity, it starts dropping information to make room for new stuff. When a presenter throws 47 slides at you in 30 minutes, your working memory overheats. First you're engaged. Then confused. Then you check out. Then nothing sticks.
The solution isn't sharing less information. It's structuring it into logical chunks. AI has compressed the buyer's research cycle from months to hours. They're processing massive amounts of information at unprecedented speed. If you add to cognitive overload instead of reducing it, you lose. Buyers now expect pre-digested insights in clean formats. Structure is respect. When you organize content clearly, you're respecting their mental capacity.
The Surprise Effect: Dopamine on Demand
Unexpected information releases dopamine and gets encoded into memory more strongly
Your brain is a novelty-seeking machine. For 200,000 years, noticing the unexpected kept you alive. That rustling in the bushes could be threat or opportunity. When something surprises you, your nervous system releases dopamine, the neurotransmitter associated with pleasure, motivation, and memory formation. Emotionally arousing events, including surprises, are encoded more effectively into memory.
Surprise isn't just engagement theater. It's a memory anchor. When every competitor's demo follows the same script, predictability kills you. Your prospect's brain literally stops encoding the information. But show them something unexpected, a capability they didn't know existed, and attention snaps back. In a world where 50% of buyers start in AI chatbots, they've seen all the expected stuff. What they haven't seen is the insight that makes them say 'Wait, you can DO that?'
Picture-Superiority Effect: Images Beat Words
You remember images significantly better than words because your brain stores them two ways
When someone shows you a clear image, your brain stores it in two forms: the image itself AND a verbal label for it. When someone just tells you something, it only gets stored as language. This 'dual encoding' means visuals stick in memory far longer than text or spoken words alone.
Well-designed visuals don't just make presentations prettier. They offload processing to your visual channel, preventing cognitive overload. Most B2B presenters do this backwards: paragraphs of text on slides while talking over them. Your audience's working memory can't handle reading and listening simultaneously. The rule is simple: Show, don't tell. A clear graph of before/after performance beats ten slides explaining the improvement. In the compressed AI-era buying cycle, you have less time to make your point stick. Visuals are efficiency tools.
Primacy and Recency: Beginnings and Endings Matter Most
People remember what they hear first and last better than everything in the middle
This is one of the most replicated findings in cognitive psychology: The beginning (primacy effect) and the ending (recency effect) get encoded most strongly. The middle blurs. Why? The beginning gets full attention before cognitive fatigue sets in. The ending is the last thing processed, still in working memory when you walk away.
Your champion will remember your opening and closing. Maybe. Everything else is questionable. If you open with agenda slides and company history like most B2B presentations, you waste your highest-value memory real estate. If you close with 'Any questions?', you give them nothing memorable to carry out. Smart presenters exploit this: Put your most important message at the start and echo it at the end. Lead with their problem, not your company background. End with their future state, not a whimper.
References
Behavioral science research supporting this chapter