Non-Goals as Guardrails: The Simple Habit That Stops AI From Gold-Plating Your Project

AI systems naturally fill undefined spaces with assumptions and helpful additions you never requested. By explicitly defining and documenting non-goals—features or changes you won't make—and keeping them visible in your project instructions, you establish persistent guardrails that prevent AI from silently introducing unwanted features, integrations, or architectural changes across future interactions. This simple practice shifts from cleaning up unwanted work after the fact to preventing it from happening in the first place.