🌧️ Productive pessimism isn’t defeatism
Entrepreneurs tend to be optimistic, and that’s necessary to get started. The problem is that optimism can also hide risks. Productive pessimism is the antidote: you deliberately and carefully imagine all the ways the plan could fail.
✓ Productive mindset
- ✓"If no one knows it exists, how do I get the first 10 users to find it?"
- ✓"If someone copies it in a week, what would still be mine?"
- ✓"If I’m wrong, how much will I lose?"
✗ Defeatist mindset
- ✗"I don’t have an audience, so there’s no point."
- ✗"They’ll copy it anyway, so why try?"
- ✗"Something similar already exists, so I’m giving up."
💡 One-line test
For every risk you list, write an action next to it that takes less than a day. If there isn’t one, that risk is serious and deserves your attention first.
📓 The contingency journal
Some entrepreneurs keep a notebook for years with just one question: "if I lost everything tomorrow, how would I feed my family legally?". Their answers become more concrete and creative over time: sleeping near universities, buying a suit at a thrift store to get into events with free food, shaving to look like any other attendee.
🧗 Why such an extreme exercise helps
Thinking about the worst-case scenario takes fear out of the abstract and turns it into a list of actions. After a few years, you discover that there’s almost always a way out, as long as you look creatively at the resources available to you.
Applying that same mindset to products leads to useful questions: "if I had no ad budget, how would I get my first users?".
Copy and run
Create your product version of the contingency journal with help from an AI assistant (Claude, ChatGPT, or Codex).
I want to practice productive pessimism about my product.
Product: <describe it in one sentence>
Audience: <who uses it>
Resources I have today: <time per week, money, contacts, skills>
Imagine the three worst realistic scenarios for the next 90 days
(e.g., no one signs up, a large competitor launches the same thing, I run out of time).
For each scenario, list 3 creative ways out using ONLY the resources I already have.
Nothing that requires new investment. Be specific: action, timeline, cost.💡 Start small
It doesn’t have to be a journal you keep for years. Open a note called "contingency" and add one line each week. The value comes from repetition.
👎 The five reasons it WON’T work
Take your idea and answer without mercy: what are the five strongest reasons this won’t work? The list below shows the reasons that come up most often. Use it as a starting point, not an answer.
The most common reasons
I don’t have distribution
The problem most people face
No one will know the product exists. Without an audience, partners, or a channel, even the best product dies in silence.
It can be copied by screen recording
The clone test
Someone records a video using your product, gives it to a coding assistant, and says "make the same thing." If that’s enough, you don’t have a product; you have a demo.
The pain might be unique to me
Unknown market
The problem exists in the way you work, but you don’t know whether hundreds, thousands, or millions of people feel the same way.
I don’t know the market size
Uncertain TAM
There could be five potential customers in the world, or five million. Without an estimate, you don’t know whether it’s worth the effort.
It may be local only
Geographic scope
The need may exist in your city or region and not make sense anywhere else.
⚠️ Don’t skip this exercise
It’s uncomfortable to write down why your idea will fail. That’s exactly why almost no one does it, and almost everyone discovers these reasons too late, after months of work.
👍 The five reasons it will work
Now do the reverse exercise. What are the five strongest reasons this could work? The same rule applies: no wishful thinking, just facts and resources you have today.
Partners who would promote it
People you know with an audience on social media who would talk about the product in exchange for a commission on each sale.
A channel of your own
Even a small one: an email list, a profile, a group of former customers.
Test groups
Forums and groups where your audience already gathers and is open to useful tools.
Early feedback
A way to know in days, not months, whether the product is on the right track.
Low cost to test
The ability to find out whether it’s worth pursuing while spending almost nothing.
✓ Valid reason in favor
- ✓"I have three friends in the niche with 20,000 followers who are willing to promote it."
- ✓"I already have 200 former customers with this problem."
- ✓"I can test it with a group of 5,000 people this week."
✗ Weak reason in favor
- ✗"Everyone will want this."
- ✗"If it goes viral, I’ll make it big."
- ✗"The product is much better than the others."
💡 Cross-check the two lists
For each reason against, see whether a reason in favor offsets it. "No distribution" is offset by "partners who will promote it." Risks with no match on the other list are the ones that need a plan.
🎲 The minimum bet
The final piece of productive pessimism is asking: how can I find out if I’m right while spending as little as possible? Not the minimum needed to build the whole product, but the minimum needed to answer the most dangerous question.
| Riskiest question | Minimum bet | Sign of success |
|---|---|---|
| Does anyone want this? | Simple page with a waitlist, shared in 2 groups | 30+ sign-ups in one week |
| Will anyone pay? | Pre-order button with a discount | 3+ actual payments |
| Can people understand it on their own? | Prototype used by 5 people without help | 4 out of 5 reach the result |
| Can I reach the audience? | A post in a niche forum | Replies and direct messages |
⚠️ Be careful with a bet that proves nothing
Opinion surveys ("would you use it?") are cheap, but they prove almost nothing. People say yes to be polite. Prefer tests that require them to take action: sign up, pay, or use it.
⚰️ AI pre-mortem
You can combine everything in this module into a single AI exercise. The technique is called a pre-mortem: instead of asking "what could go wrong?", you state "it already went wrong" and ask the model to reconstruct the story of the failure. Changing the tense leads to much more concrete criticism.
Copy and run
Run a complete pre-mortem of your idea in Claude, ChatGPT, or Codex, weighing reasons against it, reasons in favor, and minimum bets.
Act as an experienced, skeptical investor. Run a PRE-MORTEM on my product.
Product: <what it does, in one sentence>
For whom: <specific audience>
How it makes money: <pricing model and price>
Resources I have: <time, money, audience, contacts>
Start from this fact: 12 months from now, the product has FAILED.
1. List the 5 most likely causes of failure, from most to least likely.
Be sure to consider: distribution, how easy it is to copy (someone records the
screen and asks an AI to recreate it), the real size of the market, whether the pain is only mine,
and whether a giant could launch something similar.
2. List the 5 strongest reasons it could have SUCCEEDED, using only the resources I listed.
3. For each cause of failure, propose a minimum bet (less than 7 days and
less than R$ 200) that would test whether that risk is real.
4. End with a one-sentence verdict: proceed, adjust, or abandon, and why.
Don't sugarcoat it. If the idea is weak, say so.💡 Run it twice
Run the same prompt in two different models, or twice in the same model in new conversations. Test the causes that appear in both answers first.
✓ Good use of the pre-mortem
- ✓Run it before writing code.
- ✓Turn each cause into a cheap test.
- ✓Repeat when the idea changes.
✗ Bad use of the pre-mortem
- ✗Keep asking until the model agrees with you.
- ✗Read it, find it interesting, and carry on as before.
- ✗Use it as an excuse to never get started.
🧪 Quick module quiz
Three questions. Click an option to see the answer.
1. What distinguishes productive pessimism from defeatism?
2. What is the "clone test"?
3. Why does the pre-mortem declare that the product "has already failed"?