There’s a way to get Claude to tell you the thing you’ve been avoiding. It doesn’t require any special setup. A Redditor on r/ChatGPTPromptGenius posted a set of prompts this week that work like forced honesty sessions, and one of them helped surface a fatal business flaw in under four minutes.
That’s the part worth sitting with. Not that Claude found something clever. That the author already knew it somewhere, and the prompt just forced it into the open.
What the author did
The setup was simple. The Redditor told Claude to respond as two characters at once:
“respond as two characters simultaneously. character one genuinely believes my idea is brilliant and will defend it. character two thinks it’s fundamentally broken and wants to prove it. both are equally smart. neither is allowed to be polite about it.”
What came back looked like a courtroom. Two columns, same question, completely opposite conclusions, and both of them right about different things. The author had been unconsciously protecting a fatal flaw in their idea for four months. It took three minutes to surface.
Why it works
Most prompts ask Claude for information. These ask for something different: reflection.
The split personality format removes the AI’s default pull toward diplomacy. By telling it that neither character is allowed to be polite, you get the critique without the cushioning. And you can’t easily dismiss it because you wrote the rules yourself.
The pattern holds across all seven prompts in the post. You’re not asking “what do you know.” You’re asking “what do you see.” That’s a fundamentally different relationship with the tool, and it produces a fundamentally different kind of output.
The author’s framing is the most useful part: the prompt doesn’t make Claude smarter. It makes you more honest.
All seven prompts, exactly as written
To stress-test any idea:
“respond as two characters simultaneously. character one genuinely believes my idea is brilliant and will defend it. character two thinks it’s fundamentally broken and wants to prove it. both are equally smart. neither is allowed to be polite about it.”
To understand your own writing:
“read what i just wrote and tell me what kind of person wrote it. not the content. the psychology behind the content.”
To pressure-test a product:
“pretend this is a startup pitch. you are a brutal vc who has heard a thousand pitches and funded twelve. what is the one question you would ask that i have no answer to.”
To find what you’re actually afraid of (warning: works too well):
“i’m going to describe my morning routine. tell me what it reveals about what i’m actually afraid of.”
To spot the assumption you’re protecting:
“read this plan and identify the assumption i am most emotionally attached to that is also the most likely to be wrong.”
To see how the idea breaks:
“write the version of this idea that fails. be specific about exactly how and exactly when.”
To close a long working session:
“what is the most honest thing you could say to me right now based on everything i’ve told you today.”
🎯 Use Cases
- 🧠 Before launching anything: run the split personality prompt on your core assumption before you commit to it
- 📋 After drafting a strategy doc: use the “assumption I’m most attached to” prompt on the section you’re proudest of
- At the end of a long working session: the “most honest thing” prompt is a clean way to close out with actual clarity instead of momentum theater
Variations worth trying
The prompts work as written. A small addition sharpens the output: add “be specific, cite the exact line or section” to the end of any of these. It removes vagueness and makes the feedback harder to sidestep.
For the split personality prompt, you can also add a third character: a neutral observer who only points out where both sides are talking past each other. That surfaces a different kind of insight, more about framing than substance.
For the VC prompt, swap “startup pitch” for whatever context fits. “You are a senior editor who has rejected a thousand articles” hits differently if you’re writing. “You are a hiring manager who has interviewed five hundred candidates” hits differently if you’re building a resume.
Prompt of the Day
“read this plan and identify the assumption i am most emotionally attached to that is also the most likely to be wrong.”
Use it on anything you’ve spent more than a week building. The answer usually arrives in one sentence, and you’ll know immediately that it’s right because your first instinct will be to argue with it.
The full thread on r/ChatGPTPromptGenius has more reactions and variations in the comments. Worth reading directly to see how others are adapting these for their own work.
Frequently Asked Questions
Q: Can you bake these prompts into a system prompt?
Yes. Users integrate these multi-perspective prompts into their project’s system prompt for consistent ‘honesty triggers.’ Once set up, you get this forcing function automatically rather than having to craft new prompts each time.
Q: Does this work outside of business strategy?
Absolutely. Users report success in medical contexts, content strategy, and anywhere you need to examine your own assumptions, essentially any decision you’re emotionally invested in.
Q: Why is this better than just asking Claude for advice?
The magic is external validation of what you already know. One user discovered their content strategy was wrong, then realized their own analytics already showed this. They just needed something external to look honestly at what they’d been avoiding. Claude didn’t teach them. It forced accountability.
Q: Can you predict future problems with this approach?
Yes. Try: ‘Based on what I’ve told you, what would you predict I’ll still be struggling with six months from now if I change nothing?’ It applies the same psychological pressure to future scenarios rather than past assumptions.
i gave Claude a split personality and it diagnosed my entire business strategy in 4 minutes.
by u/AdCold1610 in ChatGPTPromptGenius