You grab a Red Bull at checkout. Behind that can is a race team that wins by testing everything. Here is what F1's small gains and rule changes teach investigators about upgrading the interview.

There is a heat map for the cereal aisle, the ad, the landing page, and your résumé. Entire professions test, measure, and upgrade to move a number two percent. The interview room—where we decide what is true—still runs on a method whose first famous case produced a false confession.

Grocery stores have spent fifty years using behavioral research to change how you shop — down to the scent of the bread and the height of the cereal. Meanwhile, the way we interview and investigate hasn't meaningfully changed since 1955. If a soda bottle can be upgraded with science, why not the interview?

Evidence rarely explains itself. Investigative interviewing gives physical, digital, and testimonial evidence context, meaning, and investigative value. Through open-ended questions, corroboration, strategic questioning, and careful testing of competing explanations, investigators can strengthen evidence, uncover new leads, challenge assumptions, and distinguish meaningful connections from coincidence. Evidence guides the interview—and the interview gives meaning to the evide