You Can’t Prompt AI to Determinism
Everyone who builds with AI eventually asks the same question: “Why did it do that when I told it not to?” And almost everyone’s next move is the same too. They go rewrite the prompt, add a sentence, bold a word, and treat the next version as the fix that will finally make the thing behave. I understand the instinct (I have it too), but it quietly leads people astray. You cannot rewrite a prompt well enough to make a probabilistic system behave like a deterministic one. The words are not the problem. This article digs into why that rewrite-the-prompt loop disappoints you, why a stubbed-out function is the perfect illustration, and where reliability actually has to come from if you are building anything automated.
