Growth Manifesto Podcast

How Brands Actually Grow with Byron Sharp

9 snips
Dec 5, 2025
Byron Sharp, marketing scientist and author of How Brands Grow, explains why intuition fails in marketing. He unpacks the double jeopardy law, how penetration drives loyalty, and the twin concepts of mental and physical availability. He also discusses reach, light buyers, limits of loyalty programs, and practical ways to keep brands easy to notice and buy.
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ADVICE

Prioritise Mental And Physical Availability

  • Expand both mental and physical availability to win more customers.
  • Reach is essential: you cannot grow without acquiring many more customers.
ADVICE

Keep Advertising Even To Existing Customers

  • Keep advertising to remind customers your brand exists; email lists erode.
  • Use broad, cheap media or publicity to refresh mental availability regularly.
INSIGHT

Memory Beats Shelf Shock

  • People screen out most shelf and screen stimuli so memory matters more than standout packs.
  • Mental availability means being in people’s heads before they encounter the product.
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