When 'Reach' Meant a Broadcast Tower: How Four Classic Marketing Terms Drifted Since the Mad Men Era

Every profession accumulates vocabulary, but marketing does something rarer: it keeps the same words while changing what they mean. A term coined in a Chicago conference room in 1969 may still appear in a 2025 media plan, yet describe something its originator would barely recognize. For students and practitioners alike, understanding this drift is not trivia. It is the difference between reading a classic campaign case study correctly and misreading it entirely.

Below, four foundational terms are examined the way a dictionary would treat them: original definition first, contemporary usage second, and the reason for the shift last.

Positioning: From a Product's Place in the Mind to a Product's Place in the Feed

Classic definition. When Al Ries and Jack Trout popularized 'positioning' in their 1972 Advertising Age columns and their 1981 book, they meant it as a battle for mental real estate. Positioning was the act of establishing a distinct slot for a brand inside the prospect's mind, relative to competitors. It was a strategic, psychological concept. Volvo owned safety. Avis owned being number two.

Contemporary usage. In many agencies and platform dashboards today, positioning has narrowed to mean placement: where an ad physically appears. A media buyer might ask about 'positioning on the search results page' or 'above-the-fold positioning.' The word now frequently refers to location within a channel rather than location within a consumer's psychology.

Why it drifted. Digital advertising made the physical placement of an ad measurable and auctionable, so the operational meaning crowded out the strategic one. When an older executive uses the word, she means brand strategy. When a younger media planner uses it, he often means ad slot. Neither is wrong, but a brief that says 'improve our positioning' invites both interpretations.

Reach: From Households Tuned In to Unique Users Served

Classic definition. In the broadcast era, reach described the percentage of a target audience exposed to a message at least once during a campaign period. It was an estimate built on ratings panels and circulation audits. A network television buy might claim a reach of 60 percent of women aged 18 to 49, based on sample data from firms like Nielsen.

Contemporary usage. Reach still means unique exposure, but the denominator and the measurement have transformed. On social platforms, 'reach' is a reported metric: the number of unique accounts that saw a post, counted by the platform itself. It is no longer a percentage of a defined universe but a raw, self-reported count.

Why it drifted. The shift from sample-based estimation to census-like platform measurement changed the epistemology of the number. A 1968 reach figure was a statistical inference; a 2025 reach figure is a logged event. The two numbers are not directly comparable, which is why a veteran planner may dismiss a platform's reach claim as inflated while a newer marketer sees nothing unusual about it.

Frequency: From Average Exposures to a Capping Dial

Classic definition. Frequency was the average number of times a member of the reached audience saw an advertisement. Classic media planning revolved around 'effective frequency' debates, notably the idea that three exposures were needed for a message to take hold. Frequency was an outcome you planned toward and hoped to achieve.

Contemporary usage. In digital platforms, frequency is often a control, not merely a measurement. Advertisers set frequency caps: show this ad no more than four times per user per week. The word has migrated from a descriptive statistic to a lever in the campaign settings panel.

Why it drifted. Programmatic buying made per-user exposure adjustable in real time. What was once a planning abstraction became an operational setting, and the vocabulary followed the tooling.

Share of Voice: From Media Weight to Conversation Weight

Classic definition. Share of voice measured a brand's advertising weight as a proportion of total category advertising, typically in gross rating points or dollars spent within a market. It was an arithmetic of media budgets.

Contemporary usage. Today the term frequently refers to a brand's proportion of organic conversation, mentions, or search visibility. Social listening tools report share of voice as a percentage of category chatter, not spend.

Why it drifted. Once listening software could count mentions cheaply, the metric migrated from paid media to earned conversation, and the two versions now compete for the same name.

Why the Drift Matters for Cross-Generational Teams

The practical consequence of this lexical drift is not confusion for its own sake; it is misallocated effort. A brief that says 'increase frequency' may be interpreted by one reader as a planning target and by another as a settings change. A discussion of 'positioning' may see strategy debated while the team quietly discusses ad slots.

The remedy is unremarkable but effective: define the term in the document where it is used. A one-line glossary at the top of a media plan or creative brief costs nothing and prevents the most common failure mode in mixed-tenure marketing teams, where the vocabulary is shared but the dictionary is not.

Marketing borrows its words, wears them out, and reassigns them. The professionals who navigate that churn most easily are not the ones with the newest vocabulary or the oldest, but the ones who know which dictionary everyone else in the room is reading from.