One can be extremely confident when giving goal-based advice because it’s always right. When you switch to giving instrument-based advice—when you switch from cheerleading to playing the game—you have to warn your audience that Your Mileage May Vary, that there’s many a slip ’twixt cup and lip.
-- Garret Jones
Could you give an example for goal goal-based advice that’s always right?
Sure. From the same post: