Stop telling AI what NOT to do (and what to say instead)

If you have used ChatGPT or any AI tool for your business, you have almost certainly written instructions like this: “Do not use jargon. Do not be too formal. Do not make things up. Do not exceed 200 words.” It feels logical. You know what you do not want, so you tell the AI what to avoid.

The problem is that this approach produces exactly the kind of cautious, generic, lifeless output that makes business owners conclude AI is not ready for real work.

It is ready. You are just instructing it wrong.

The Negative Framing Problem

When you tell a person “do not think about a white bear,” they immediately think about a white bear. This is not a quirk; it is a well-documented cognitive phenomenon called ironic process theory, first described by Daniel Wegner at Harvard in 1987.

AI language models do not have minds. But they have a structural equivalent of this problem. They generate text by predicting what comes next, word by word, based on the full context of your prompt. When you fill your instructions with prohibitions, you dedicate a significant portion of the model’s attention to the concepts you want it to avoid. The word “jargon” appears in your instruction, so jargon-adjacent language stays activated in the model’s probability space. “Do not be formal” keeps formal registers present.

The result is output that reads like it was written by someone afraid of making a mistake.

What Positive Framing Looks Like

Positive framing replaces prohibitions with descriptions of what you actually want. The difference in output quality is immediate.

Instead of negative constraints:

• “Do not use jargon”
• “Do not be too formal”
• “Do not exceed 200 words”
• “Do not make things up”
• “Do not sound like a robot”

Use positive descriptions:

• “Use plain language that a business owner with no technical background would understand”
• “Write in a warm, direct, conversational tone, like explaining something to a colleague over coffee”
• “Keep the response to 150–200 words”
• “Only include claims you can directly support from the information provided”
• “Write as a knowledgeable person who genuinely wants to help”

The negative versions tell the AI what to move away from. The positive versions tell it what to move toward. A model with a clear destination produces far better work than a model surrounded by fences.

The Business Owner’s Quick Guide to Reframing

The rule is simple: every time you catch yourself writing “do not,” stop and describe what you want instead.

Tone and voice:

• “Do not be salesy” → “Be helpful and informative. Let the value speak for itself.”
• “Do not be boring” → “Open with the most interesting or surprising point. Use specific examples.”
• “Do not sound like AI” → “Write as a senior [role] with 10 years of experience who communicates clearly and directly.”

Content and accuracy:

• “Do not hallucinate” → “Only reference information provided in the source material. If you are unsure, say so.”
• “Do not go off-topic” → “Focus specifically on [topic]. Every paragraph should connect back to [core point].”
• “Do not repeat yourself” → “Make each paragraph introduce a new idea or example.”

Format and length:

• “Do not write too much” → “Respond in 3–4 concise paragraphs.”
• “Do not use bullet points” → “Write in flowing prose with clear paragraph breaks.”

Why This Compounds

Positive framing does not just improve individual outputs. When you give an AI tool a positively framed identity, “You are a senior business analyst who communicates complex findings in plain language to non-technical business owners,” every subsequent instruction inherits that framing. Combined with a structured pipeline that separates analysis from creation, the effect compounds across your entire workflow.

The first draft lands closer to what you want. Consistency increases. And the tool shifts from novelty to infrastructure, because output you can use with minor edits changes the calculus entirely.

The next time you write instructions for an AI tool, count the prohibitions. Rewrite each one as a positive description. The difference will be obvious within a single generation.

Frequently Asked Questions

What is prompt engineering?

Prompt engineering is the practice of writing instructions for AI tools in a way that produces reliable, high-quality output. It is not programming; it is closer to briefing a skilled contractor. The clearer and more specific your brief, the better the result. Positive framing is one of the most effective prompt engineering techniques: describing what you want rather than listing what you do not want.

Why do my AI prompts give bad results?

The most common reason is negative framing: instructions built around prohibitions (“do not use jargon,” “avoid being too formal,” “do not make things up”). These constraints make the AI cautious and generic. Replacing each prohibition with a clear, positive description of what you want typically produces noticeably better output on the first attempt.

Does this work with ChatGPT, Claude, and other AI tools?

Yes. Positive framing improves output across all major language models because the underlying mechanism is the same: every word in your instructions shapes the probability of what the model generates next. Positive descriptions point the model toward what you want. Negative constraints keep the unwanted concepts active in the model’s context.

This principle, designing AI interactions around how people naturally think and communicate, is central to every AI opportunity analysis at Perth AI Consulting. The analysis identifies not just where AI fits in your business, but how to configure it so your team actually gets value from it.