What if almost everything we've been taught about advertising is built on a sales model from 1904?
In this Sharp Cut, we unpack six of marketing's most persistent myths—from "digital has no waste" to "last-click attribution tells us what works"—before rebuilding a simpler, evidence-based explanation of how advertising actually works.
Rather than relying on theory, we challenge these ideas using our own careers, practical examples, and decades of marketing science from Byron Sharp, Les Binet, James Hurman, Orlando Wood and others.
In this episode
- Why digital isn't actually waste-free
- Why targeting isn't enough
- Why advertising isn't sales
- Why creative matters more than many marketers believe
- Why personalization has been oversold
- Why ROAS isn't telling the full story
- Why advertising is better understood as planting and harvesting
If you've ever struggled to explain marketing to your CFO—or even to yourself—this episode is for you.
Chapters:
00:00 Welcome to Sharp Cut
00:15 Why Most Companies Misunderstand Advertising
02:13 Myth #1: Digital Has No Waste
06:36 Myth #2: Target High-Intent Audiences
09:36 Myth #3: Advertising Is Sales Done Over Media
11:03 Myth #4: Creative Is Just Decoration
12:34 Myth #5: Personalization Is The Future
14:29 Myth #6: Last-Click Attribution Tells Us What Works
17:10 How Advertising Actually Works
18:04 Why We're Still Using a Sales Model from 1904
19:55 Advertising Is a Weak Force
20:47 The Two Jobs of Advertising
21:39 Plant vs. Harvest: A Better Mental Model
22:04 The McCain Case Study
23:59 Why Most Companies Still Think Like Salespeople
25:12 Becoming Experts in Our Own Trade
26:20 Les Binet's One-Slide Explanation
27:29 Final Thoughts: Start Planting
Supporting Links:
Binkley, M., & Douros, V. (Hosts). (n.d.). What marketers still get wrong with Prof. Byron Sharp (No. 215) [Audio podcast episode]. The Sleeping Barber Podcast.
Hurman, J. (2026). Future demand. https://futuredemand.com
Iwamoto, A. (2024). The origin of AIDA: Who invented and formulated the AIDA model? Japan Marketing History Review, 3(2), 150-166. https://doi.org/10.51102/jmhr.3.2_53
Mulroney, R. (2024). McCain: When the chips are down, margins matter. How a focus on long-term emotional brand-building reduced price elasticity and increased profits for McCain [IPA Effectiveness Awards case study]. WARC. https://www.warc.com/content/article/mccain-when-the-chips-are-down-margins-matter-how-a-focus-on-long-term-emotional-brand-building-reduced-price-elasticity-and-increased-profits-for-mccain/156769
WARC. (2026). The multiplier playbook: The CMO's guide to integrating brand and performance. WARC.
Foundational sources (optional, for show notes)
Binet, L., & Field, P. (2013). The long and the short of it: Balancing short and long-term marketing strategies. Institute of Practitioners in Advertising.
Sharp, B. (2010). How brands grow: What marketers don't know. Oxford University Press.
To confirm before air: Hurman subtitle and publisher; the exact platform and date of Binet's How Advertising Really Works video (candidate: the Cannes Lions Advertising 101 course); the publication date of SBP episode 215; and a direct URL for the WARC Multiplier Playbook (produced with Analytic Partners, BERA.ai, Prophet, System1 and the ANA).
