I've never torched £50,000 on a single print ad. Frankly, the thought of signing off on a spend with no discernible ROI makes my skin crawl. But for decades, that was marketing. A gentleman's agreement between the board and the CMO, built on faith, brand recall surveys, and the vague hope of being noticed.
This was the first era of marketing measurement: the Age of Print. It was an era defined by ambiguity.
The Print Era: Educated Guesses and Wasted Spend
John Wanamaker, the department store magnate, famously lamented, "Half the money I spend on advertising is wasted; the trouble is I don't know which half." This wasn't just a clever quip; it was the accepted reality for the better part of a century. Marketing operated in a fog.
Measurement, such as it was, relied on flimsy proxies. We used Audit Bureau of Circulations (ABC) figures for newspaper reach, then squinted and guessed at actual readership. We bought TV spots based on estimated eyeballs and prayed the ads would land. The entire process was an exercise in correlation, not causation. Sales went up after a campaign? Great. The marketing director kept their job. Sales went down? Well, it was probably the economy.
In this environment, marketing was a cost centre. It was a budget to be negotiated and, in tough times, the first to be slashed. The boardroom viewed marketing as the colouring-in department, disconnected from the hard numbers that drove the business. There was no real accountability because there was no real data.
The Pixel Era: The Great Deception of Precision
The internet promised to change everything. With the arrival of the pixel, we were sold the dream of perfect, one-to-one tracking. Suddenly, the fog would lift. Every click, every impression, every conversion could be meticulously recorded. The Wanamaker problem was solved. Or so we were told.
This ushered in the second era: the Age of the Pixel. Platforms like Google Analytics, AdWords, and Facebook Ads became the new source of truth. The industry became fixated on a new alphabet soup of metrics: CTR (Click-Through Rate), CPC (Cost Per Click), CPA (Cost Per Acquisition), and the holy grail, ROAS (Return On Ad Spend).
Here’s my contrarian take: the pixel era was built on a foundation of lies. It replaced the honest ambiguity of the print era with a dishonest and deeply flawed illusion of precision.
Attribution, the practice of assigning credit to the touchpoints in a user's journey, is a fantasy. Whether it's last-click, first-click, or a complex multi-touch model, it's all just a sophisticated method for distributing credit for a journey you can never truly see. The data is compromised from every angle. Walled gardens like Google and Meta refuse to share a complete picture. Privacy regulations like GDPR and Apple's Intelligent Tracking Prevention (ITP) systematically dismantle the very tracking mechanisms these models depend on. Consumer behaviour—switching devices, clearing cookies, researching online and buying offline—shatters the linear path we pretend exists.
This false precision bred a generation of marketers and agencies who became experts at gaming the system, not necessarily at generating real growth. They learned how to optimise for a 400% ROAS within the Facebook Ads dashboard, even if that 'return' was just claiming credit for customers who would have bought anyway. The goal shifted from driving incremental business value to presenting a tidy report to the board. We didn't solve the Wanamaker problem; we just got better at pretending we knew which half was working.