I use the ‘potato’ prompt with ChatGPT every day — here is how it finds the holes in my logic

Between Slack notifications, text messages, emails and doing actual work, my brain sometimes feels like mush when I have to start something new. Whether I’m speaking in a meeting or coming up with new ideas, there are times when I can’t rely on myself to get it together fast enough.

That’s when I lean on ChatGPT to reset my focus and help me see holes that I may not see otherwise. When I’m stuck on a thought or simply have no ideas at all, I turn to this one prompt in particular — and it boosts my productivity almost every time.

The anatomy of the mental wall

(Image credit: Shutterstock)

I’ve spent years using AI as a sounding board, but I recently realized I was using it wrong. I was asking ChatGPT to “help me plan” or “summarize my ideas,” which usually resulted in the AI simply agreeing with me. It was a digital echo chamber.

Custom Instructions (or at the start of a chat), I’ve turned ChatGPT into a world-class logic checker. Here is how the “Potato” method identifies the gaps in my thinking that I’m too biased to see.

(Image credit: Shutterstock)

ChatGPT is trained to be helpful and harmless. By default, it tends to follow your lead. If you give it a mediocre idea, it will often try to “fix” it or make it sound better rather than telling you it’s fundamentally flawed.

This is dangerous for productivity. It gives you a false sense of confidence in a weak argument. To get a real critique, you have to give the AI permission to be harsh.

(Image credit: Future)

To use this yourself, paste this “rule set” into a new ChatGPT window:

“Whenever I type the word ‘Potato’ followed by an idea or argument, I want you to ignore your ‘helpful’ persona. Instead, act as a Hostile Critic. Your only job is to find the ‘holes’ in my logic. Point out three specific ways my argument could fail, two assumptions I’m making without proof, and one counter-argument I haven’t addressed. Do not be polite; be precise.”

In essence, I’ve programmed my “potato” shortcut to act as a Logical Red Team. When I trigger it, the AI stops being a collaborator and starts being a “Devil’s Advocate.” It looks for:

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It crushes confirmation bias. We naturally seek out information that agrees with us. ChatGPT is programmed to be helpful, which often means it accidentally fuels your bias. The “potato” prompt forces the AI to stop “yes-pointing” and start “counter-pointing.”It triggers “editing mode.” Starting from a blank page is hard because it requires creative energy. Reacting to a critique requires analytical energy, which is much easier to access when you’re tired. It’s easier to fix a “hole” than to build a wall from scratch.It acts as a “digital palette cleanser.” Switching from a creative task to a logic-heavy one is jarring. Using a nonsense word like “potato” acts as a mental circuit breaker, clearing the “cache” of your previous task so you can focus on the new one.It saves you from “prompting paralysis.” You can spend 20 minutes trying to write the “perfect” prompt, or you can spend 2 seconds typing “potato.” It favors momentum over engineering, getting you to a draft faster than any complex template could.It Identifies “survivor bias.” We often focus on why an idea will work. The Logical Red Team focuses on why it won’t. It forces you to look at the data points or market realities you’ve conveniently ignored.It’s an instant “ego check.” When we’re excited about a new project, we become blind to its flaws. The “potato” prompt provides a neutral, non-judgmental “reality check” before you take that idea to your boss or a client.It uncovers “hidden assumptions.” Most failed plans fail because of an unstated assumption (e.g., “I assume users will find this button”). The Red Team logic is designed to dig up those buried assumptions and drag them into the light.It prepares you for real-world static. By letting the AI “attack” your argument first, you’re basically practicing for a Q&A session or a tough meeting. You’ll already have the answers to the hard questions because the AI already asked them.It exploits AI’s best skill: pattern matching. LLMs are mediocre at being “original,” but they are world-class at finding inconsistencies. The “potato” prompt plays to the AI’s actual strengths — detecting patterns (and breaks in patterns) across massive amounts of data.

Pitching a new feature. I recently used it for a product pitch. I typed “Potato: We should move the search bar to the bottom of the app for better thumb reach.” Instead of saying “That’s an interesting idea,” the AI pointed out that users have 15 years of muscle memory expecting it at the top and that it would conflict with navigation gestures. It saved me a week of wasted design time.Salary negotiations Before a big meeting, you could type something such as “Potato: I deserve a raise because I’ve hit all my KPIs.” The AI will then push back with something like: “Hitting KPIs is the requirement for keeping your job, not necessarily for a raise. You need to prove market value or expanded scope.” It forced me to refine my case.Decision making When I’m torn between two choices, I’ll type “Potato” followed by my preferred choice. The AI’s job is to tell me why that choice is actually a mistake. It forces me to defend my position—or change it.

AI productivity doesn’t always come from better tools or longer prompts. Sometimes it comes from giving yourself permission to begin imperfectly.

My “potato” prompt isn’t a hack in the traditional sense, but it forces ChatGPT to stop saying yes when you really need useful support and feedback.

If you find yourself frozen by overthinking, try this one-word reset. You might be surprised how quickly a small, ridiculous interruption turns into genuine forward progress.

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