Marketing Principles

This one forces you to answer three context questions before it'll give you any advice, which honestly saves time because it won't let you get away with "I need help with marketing." It maps your problem to specific principles from Drucker, Ogilvy, Munger, and others, then gives you a 48-hour action instead of theory. Every recommendation includes an inversion section where you work backwards from failure. The decision engine is really just a lookup table matching common problems to 2-3 relevant principles. Good for when you're stuck on a marketing decision and need frameworks instead of tactics, or when you keep getting vague strategic advice and want something you can actually execute this week.