Several years ago, a designated pilot examiner was in the habit of asking his private applicants one question to fulfill the oral portion of the practical test, and only one. The question was this: "Which control makes the airplane go up?" If the applicant answered that the throttle makes it go up, he passed, but if he said the elevator makes the airplane go up, he failed the oral, and thus the entire flight test!
This is a companion discussion topic for the original entry at https://www.avweb.com/features/eye-of-experience-31back-to-basics-again