During World War II, Allied forces were studying the damage on their bomber aircraft that had returned from missions over Europe. The data was analysed by Abraham Wald, a mathematician working with the US Statistical Research Group.
He had a key observation that the data included only the aircraft that survived, whereas the planes that were hit in areas like the engine and cockpit never returned and thus were not included in the data.
Wald concluded that the areas with few or no bullet holes were actually the weakest because those planes that were hit had not returned.
Based on this, he recommended reinforcing those undamaged areas rather than the obvious ones with visible damage. This insight is called survivorship bias, and most of the time in real life, we all fall to this Bias.
SURVIVORSHIP BIAS IN MARKETING AND SALES
The Ambassador (the most famous Car Brand of India) was once everywhere.
It was:
- the default government car
- trusted by fleets and taxis
- seen as “Indian” and dependable
Looking only at survivors, one could argue it was a success for decades.
But survivorship bias masked deeper issues.
While Ambassador owners continued out of habit or lack of alternatives, new buyers quietly stopped entering the funnel.
What failed was not brand recall, but relevance:
- outdated design
- poor fuel efficiency
- lack of comfort and features
- slow response to changing customer expectations
There was no sudden collapse. The decline was gradual and silent.
The data leadership looked at was existing demand — the survivors. The missing data was younger buyers who never even considered the Ambassador.
By the time this absence became obvious, the market had moved on.
You might wonder what to do with this insight as a marketer.
Start with two simple questions:
What has made you successful so far?
And more importantly, will the same reasons guarantee success tomorrow?If the answer is no, then the work ahead becomes clear.
You must look beyond what worked, beyond loyal customers, beyond familiar channels — and study what quietly stopped working.These questions don’t just shape strategy.
They protect you from survivorship bias the false comfort of past success.In marketing, yesterday’s survivors rarely explain tomorrow’s growth.
Lesson:
Longevity often answers the first question: what made you successful so far?
But it rarely answers the second question: what will keep you relevant tomorrow?
That’s where marketers slip.
When non-buyers are ignored, decline appears slower than it is. Existing customers, legacy channels, and familiar metrics create the comfort of continuity, even as relevance erodes underneath.
Visible success can reassure.
Invisible failure, customers who never entered, never returned, or quietly moved on, is what actually teaches.
The marketer’s job is not to protect past success, but to question it before the market does.
Vikas Marwaha – Business Strategist