Your Average Customer Doesn't Exist — And That's Why Your Marketing Isn't Working

Here's a story that should make every London business owner uncomfortable.

The US Air Force once tried to build the perfect cockpit seat. Their engineers measured thousands of pilots and designed the seat around the average: average forearm length, average thigh length, average everything. The result? Almost nobody could sit in it comfortably. When they dug into the data, they found that the number of pilots who were average across all the dimensions that mattered was close to zero. Design for the average, and you end up designing for a customer who doesn't exist.

That's the opening story in a genuinely brilliant conversation between Neil Martin and Rory Sutherland — Vice Chairman of Ogilvy and one of the sharpest minds in marketing working today — recorded live at BizX 2026. If you run a business in London, or anywhere else, it's 40 minutes that will change how you think about growth, risk and decision-making.

Here's why it's worth your time.

Marketing isn't a science you can outsource to a spreadsheet. Sutherland argues that most businesses run on the 70% of decisions that are safely data-driven and predictable — finance, operations, logistics. But marketing and innovation are the two areas that interface with real human beings, and human beings aren't within your control no matter how good your dashboard looks. Treating marketing like an exact science doesn't make it safer. It just means you stop finding the breakthroughs.

Averages are the enemy of good decisions. The same seat-design trap catches businesses that build strategy entirely on averaged customer data. The moment you average away the outliers, you strip out exactly the information that would have told you something interesting.

The 70-20-10 rule for experimentation. Sutherland lays out a simple framework used by top media agencies: 70% business as usual, 20% incremental improvement, 10% genuine blue-sky experimentation — and in that 10%, you don't just accept failure, you should be aiming for it. If nothing's failing, you're not being bold enough. He backs it up with a striking stat: businesses that ran eight tests dramatically outperformed those running four — not because more tests are inherently better, but because testing eight things means you make room for a couple of genuinely silly ideas. And the silly ones are where the real breakthroughs tend to hide.

Why "AI-free" could be the next premium market. Just as organic food became a badge of quality once industrial farming took over, Sutherland predicts a real market forming around guaranteed AI-free businesses — companies that use AI to cut their own costs without quietly offloading the hassle onto customers.

Removing friction beats adding features. From Timotei shampoo's green packaging making it acceptable for men to buy, to the caravan reimagined as a piece of Scandinavian design rather than a symbol of naff Sunday drives, Sutherland shows again and again that the biggest wins in business come from solving a psychological problem, not a functional one.

The best pitch for marketing isn't what marketers do — it's how they think. His closing point is the one every London business owner should sit with: marketing has spent years justifying itself in the language of finance, defending its budget by proving ROI on individual campaigns. But its real value is the 180-degree view — looking at your business from the customer's side of the counter. Lose that mindset, and a board full of perfectly rational people can make a decision that's financially sound and commercially disastrous (his self-checkout-and-shoplifting example alone is worth the watch).

If you're making decisions about growth, hiring, marketing spend or where to take some intuitive risk this year, this is essential viewing. Watch the full conversation below.