Partly. It lowers the odds but guarantees nothing, so you still need to check. What the instruction really means is: say you do not know rather than guess, so write exactly that. Ask for proof as well, such as citations or the exact passage each answer came from.
- Strong wording like you must, plus an exclamation mark on key lines, makes the model take a rule more seriously.
More in Prompting Tips
Should I give AI a word limit?
Yes, always say how long you want the answer. Give a number, such as 250 words, 500 words or one page, depending on where the text is going. Length belongs in the expectations part of your prompt, at the end, together with the format and tone you want.
What is a Prompt Library?
A prompt library is any place where you keep your reusable prompts: a Word document, an Excel sheet or a notebook page all work. Save a prompt once it gives you good results, then swap the details the next time you use it. That saves rewriting the same instructions again and again.
What should I write in Custom Instructions?
Describe how you work and communicate, and let the AI draft the instructions for you, because it explains things to itself better. In Copilot, a strong approach is to ask it to analyse your sent emails and write instructions that match your style. Then paste the result into the custom or draft instructions box.