Respondent four, a Thursday afternoon, forty minutes into a call about a purchase from March. She told me she compared four options, read reviews across two sites, weighed price against durability, and chose the one with the best warranty. It was an excellent answer. Structured, confident, specific.
Later in the same call she mentioned that her sister had one on the counter and she ordered it from her phone in the kitchen that night.
Three seconds. Then eight months of narration on top of it.
I ran nine of these ahead of a Q4 launch and got nine versions of the same shape. A quick decision, dressed afterward in the clothes of a slow one. None of them were lying. That is the part that makes this dangerous.
Post-purchase interviews collect explanations, and an explanation is a story the buyer built after the fact to make a fast decision look like a defensible one.
The trouble starts when the explanations go into a deck. Warranty language shows up in the positioning. The comparison chart gets built. Six weeks of work aimed at a deliberation that never happened, while the thing that actually moved the purchase, a sister with one on the counter, does not appear anywhere in the strategy because nobody asked about kitchens.
So change what you ask for. Stop asking why. Why invites a thesis. Ask what happened instead.
Three questions that work. One, where were you and what were you doing right before? The setting carries the trigger. Two, what did you almost do instead, including nothing? The real competitor is usually inaction or a workaround, not the brand you benchmarked against. Three, who else knew you were looking? That is where you find the sister, the coworker, the person at the next desk.
Then listen for the moment the story gets vague. People are fluent about the reasoning and fuzzy about the trigger, which means the fuzzy part is where the truth is. When somebody says I just kind of ended up with it, do not move on. That is the whole interview.
A quick decision, dressed afterward in the clothes of a slow one.
The brands that get this right build for the trigger and not the rationale. Salt & Straw does not win because you evaluated flavor portfolios. You win an argument about it later, on the walk back, after the line already had you. The rationale is real. It just arrives second, and positioning built on second things is positioning built on an echo.
I do this too. I claim I choose karaoke songs by range and crowd and what the room needs. What actually happens is that the book falls open, I see a title I recognize, and I hand the slip over before my judgment catches up. Nine seconds. Then I explain it to everyone for the rest of the night.