Interviewers calibrate on one thing early in a case: whether the structure comes from the actual business question, or whether it's a memorized framework with the buckets relabeled. This session works through building that structure live, on an unfamiliar prompt, and where candidates usually default back to the template instead of the problem. Joseph Nolte spent seven years at Bain, including time running case interviews for Bain's own MBA recruiting, so he's graded the difference between a structure that sounds neat and one that actually isolates the driver. That's a distinction that's easier to pick up from someone who's sat on the other side of the table than from a prep book.