People rarely begin a purchase by thinking about brands. They begin with a situation, and the brands that come to mind are the ones already attached to it.
Memory is retrieved through cues, not lists
A buyer does not scan a mental inventory of every option in a category. Something in their circumstances triggers recall of a small number of candidates.
Those triggers are ordinary and situational: needing something for a long drive, hosting people at short notice, replacing something that failed.
The brands retrieved are those previously linked to that situation in the buyer's memory, which makes the link the asset rather than the message itself.
Entry points are the situations, not the segments
Traditional segmentation describes who the buyer is, while entry points describe when and why a purchase occasion arises.
The same person occupies different entry points at different moments, and their needs in each may point toward entirely different brands.
Planning against occasions rather than demographics therefore covers more of the market with the same budget, since occasions cut across audience definitions.
Coverage matters more than depth
A brand strongly linked to one entry point is retrieved only when that situation arises, which caps its potential regardless of how strong the link is.
Expanding the number of situations a brand is associated with increases the number of occasions on which it enters consideration at all.
This is why long-running campaigns often depict a variety of usage occasions rather than repeating a single scenario with more production value.
Advertising's job becomes association building
If entry points drive retrieval, then the purpose of brand advertising is to attach the brand to relevant situations rather than to argue a feature comparison.
That requires depicting the situation clearly enough to be recognized, and linking it to the brand consistently enough for the association to persist.
Consistent visual and verbal assets do that work, since recall depends on the cue reaching a brand the audience can identify without deliberate effort.
Measurement follows the same logic
Unprompted awareness questions asked in isolation reveal little about whether a brand will be retrieved in a real purchase situation.
Research designed around entry points asks which brands come to mind for a described occasion, which is closer to how retrieval actually happens.
Tracking that across occasions shows where a brand is present, where it is absent, and which gaps are worth the cost of closing.