Podcast Summary: Think Fast, Talk Smart – "Say What Sticks: The Neuroscience of Memorable Communication"

Host: Matt Abrahams
Guest: Dr. Carmen Simon, Cognitive Neuroscientist, Author ("Impossible to Ignore")
Episode: 272
Date: March 16, 2026
Main Theme: The neuroscience behind making communication memorable—how to capture attention, foster retention, and influence decisions with science-backed techniques.

Episode Overview

This episode features a rich, insightful conversation between host Matt Abrahams and cognitive neuroscientist Dr. Carmen Simon, renowned for her research on attention, memory, and how professionals can design messages that stick. The discussion goes deep into the brain mechanics behind attention and memory, practical strategies for structuring communication to boost recall, and actionable advice for anyone seeking to be more persuasive and unforgettable in business or life.

Key Insights & Discussion Points

1. The Relationship Between Attention and Memory

• Attention as a Precursor to Memory:
  Dr. Simon explains that memory is a byproduct of attention, but paying attention is more nuanced and difficult than most realize.

  • "Attention is one of the most misunderstood cognitive processes in the brain. The good news ... is that we don't pay attention just in one way." – Carmen Simon [03:19]

• Multiple Types of Attention:
  There are different dimensions:

  • Where attention is directed (external vs. internal)

  • Who is dictating attention (self-initiated vs. externally prompted)

  • Example: Looking at AI tools (external attention), or wondering about their creativity vs. yours (internal attention).

• Manipulating Attention:
  Communicators can guide audience attention by changing expected stimuli—making something bigger, louder, or otherwise deviating from the norm.

  • "If something is small all the time, then making something large will get attention. If something is quiet, then something that is louder will get your attention." – Carmen Simon [04:27]

2. Novelty vs. Surprise in Capturing Interest

• Novelty: Something genuinely new or unseen before (hard to create).

• Surprise: A familiar element presented in an unexpected way.

  • "Novelty is something that you haven't seen or experienced before. Very hard to come up with. Surprise is something that you have seen or experienced before, but did not expect." – Carmen Simon [05:25]

• Surprise as a Learning Catalyst:
  The brain learns from the gap between expectation and reality; this makes surprise a powerful tool for engagement.

  • "What is a surprise but a failure to predict what happens next? ... A brain that predicts the next step is a brain that survives." – Carmen Simon [05:48]

3. The Crucial Role of Priming

• Priming the Brain:
  Before key moments, prepare the audience for what's coming—helping their brains be more receptive.

  • "Priming means getting the brain to process a stimulus so the next stimulus can be processed a little bit differently." – Carmen Simon [08:20]

• Strategic Placement:
  Place surprising or attention-grabbing elements right before your most important points to maximize focus and recall.

  • "Don't waste those within a sequence. Place them strategically before points that really have to get attention." – Carmen Simon [08:56]

• Practical Example:
  Use simple associations (e.g., say "chair" before "table"), relevant stories, or emotional appeals to prime for more abstract messages.

  • "A strong story can be a good primer to an otherwise abstract message." – Carmen Simon [10:07]

4. The "10% Message" — Focusing on What Sticks

• Forgetfulness Is Natural:
  After 48 hours, people forget about 90% of what they hear.

  • "After 48 hours, people forget 90% or more of the content that they're exposed to... I'm not so worried about the 90% that is forgotten. I am worried about the 10%." – Carmen Simon [10:57]

• Intentional Message Design:
  If you don't proactively define what you want audiences to remember ("your 10% message"), their individual takeaways will be random—and your influence diluted.

  • "Very few really know what they want to be memorable for... What is my 10% message?" – Carmen Simon [11:51]

• Unifying Memory for Social Decision Making:
  Especially in business, collective memory (everyone taking away the same point) drives action.

  • "You're not just after a memory or after a unified memory across a group... Decisions are hardly ever individual. Usually, they're social." – Carmen Simon [11:09]

5. Repetition: The Mother of Memory

• Repeat, Repeat, Repeat:
  Repetition is critical. In Dr. Simon's research:

  • For a 5-minute presentation: repeat the key message at least 4 times

  • 10-minute: at least 6 times

  • 20-minute: at least 12 times

  • "In my studies, I'm showing that in a five-minute presentation, a repetition of four times is necessary for you to be in charge [of what people remember]." – Carmen Simon [12:50]

• Variation and Clarity:
  You can use analogies, stories, or examples for reinforcement, but always return to the literal expression of your message.

  • "You can use all of the other techniques you want as long as once you're done with those, you come back to the exact same message. Don't leave it to chance and don't leave it to them." – Carmen Simon [13:51]

• Why Not Repeating Hurts:
  If people only retain "the gist," credit can go to others. The more familiar the message, the more likely people recall you as the source.

  • "After 48 hours... people will not know who said what and what do they do? They tend to give credibility to the more familiar source." – Carmen Simon [14:32]

6. Keeping It Fresh for Yourself and Your Audience

• Personal Motivation:
  Communicators must also maintain their own enthusiasm by finding new angles, stories, or applications—even when delivering the same core message again and again.

  • "I'm hoping one of the practical lessons... is to challenge yourself to say, how can I maintain my own motivation and have that be up? Because people will sense lack of energy very quickly." – Carmen Simon [18:16]

  • Memorable Example: The actor in Phantom of the Opera played the same role 1,764 times but kept it fresh by having a new co-star every two weeks—a lesson in finding small, energizing elements to sustain repeat communication.

Notable Quotes & Memorable Moments

• On the Reality of Human Memory:

  • "We forget our lives almost as quickly as we live them." – Carmen Simon [03:03]

• On Guiding Attention:

  • "Deviate from the pattern... get the brain in a ready state to pay attention." – Carmen Simon [08:10]

• On Priming with Stories:

  • "A strong story can be a good primer to an otherwise abstract message." – Carmen Simon [10:07]

• On the 10% Message:

  • "So many people aspire at attention and memory, but very few really know what they want to be memorable for." – Carmen Simon [11:51]

• Matt’s Recap of the Key Takeaway:

  • "Clarify, surprise, repeat. And in that, you will really deliver on your 10% message and make your message more memorable." – Matt Abrahams [21:38]

Timestamps for Important Segments

• [02:42] – The difference between attention and memory; the challenge of making content memorable
• [03:19] – Multiple dimensions and systems of attention
• [05:25] – Novelty vs. surprise in attracting attention
• [08:10] – The impact of distractions, multitasking, and the concept of priming
• [09:38] – How to prime audiences for business presentations
• [10:57] – The brain is naturally forgetful; only ~10% of content is retained
• [12:50] – Research on how many repetitions are needed for message retention
• [13:51] – How to vary repetition and ensure clarity
• [14:32] – Risks of not reinforcing key messages—losing credit to competitors
• [17:10] – Keeping communication practices energetic and fresh
• [19:15] – Most memorable communicator: a masterful tour guide in a Polish salt mine
• [20:58] – Carmen’s three-ingredient recipe for memorable communication: Clarify, surprise, repeat

Carmen Simon’s 3-Ingredient Recipe for Effective Communication

1. Clarify the 10% message: Know and clearly define what you want to be remembered for.

2. Surprise: Associate critical points with something unexpected or novel to jolt the brain out of habituation.

3. Repeat: Come back to your main message more often than feels comfortable—repetition cements memory.

   • "Clarify, surprise, repeat. And in that, you will really deliver on your 10% message..." – Matt Abrahams [21:38]

Closing Thought

This episode, blending science with practicality, is a must-listen for business leaders, educators, and anyone eager to become a more impactful communicator. As the discussion makes clear, controlling what your audience remembers isn't just about being clever or novel—it's about being deliberate in design, strategic in structure, and bold in repetition.

For more on communication and neuroscience, the episode recommends:
Listen to episode 39 with David Eagleman.