Ole Lehmann Profile picture
Aug 7, 2024 23 tweets 5 min read Read on X
I used to think I was rational.

Then I read Daniel Kahneman's Nobel Prize-winning work on human decision-making.

He routinely asks 8 questions to expose cognitive traps you fall into daily.

Test yourself with these questions (it's the ultimate BS detector for your brain):
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Question 1: Am I thinking fast or slow?

Kahneman's not impressed by your lightning-fast decisions.

Why? Because your brain has two systems:

• Fast: Intuitive, emotional, unconscious
• Slow: Analytical, logical, conscious

Guess which one Kahneman trusts for big decisions?
Think about it: You're offered a new job. Exciting, right?

Fast thinking says: "Take it! More money!"
Slow thinking asks: "How does this align with my long-term goals?"

This question is your brake pedal in a world of snap judgments.
Question 2: Am I too stressed to think clearly?

Stress is kryptonite for your decision-making superpowers.

This question is your stress detector.

Why it matters:
• Stress narrows your focus (hello, tunnel vision)
• It amplifies negative emotions
• It makes you more likely to take unnecessary risks

So before a big decision, check your stress levels.
Heart racing? Palms sweaty? Mind spinning?

Pause.
This question is like a mental health check for your choices.

It's the difference between a panic move & a power move.
Question 3: Is this a reversible decision?

Kahneman wants you to know your exit strategy before you even enter.

This question is your decision flexibility test.

Some choices are set in stone.
Others are written in pencil.

Knowing which is which changes everything.
Buying a house? Pretty irreversible.
Trying a new hairstyle? Totally reversible.

This question helps you:
• Allocate the right amount of mental energy
• Take calculated risks
• Avoid decision paralysis

It's like having a safety net for your choices.
Question 4: What would you think about this if it were someone else's decision?

This isn't just a thought experiment. It's a superpower.

Here's why Kahneman loves this question...
Our brains are wired with an "inside view" - we're too close to our own choices.

But imagine your best friend facing the same dilemma.

Suddenly, you're a genius of objectivity.

For example:

You're considering quitting your job to start a business.

Risky, right?
Now imagine your friend wants to do the same.

You'd probably ask about their savings, market research, and backup plan.

See the difference?

This question turns your emotional decision into a logical analysis.

It's like having a personal board of directors in your head.
Question 5: What would I think about this a year from now?

Kahneman knows our brains are time-traveling fools.

We overvalue the present and underestimate the future.

This question is your time machine.

Think about it:

Remember that "urgent" work crisis from last year?
Yeah, neither does anyone else.

But that small investment you made? It's grown into something beautiful.

This question helps you see the forest, not just the trees.

It's your shield against short-term thinking and knee-jerk reactions.
Question 6: What would I advise a friend to do in this situation?

Kahneman knows you're smarter than you think... when it comes to other people's problems.

This question taps into that hidden wisdom.
Why?

1. You're emotionally detached
2. You want the best for your friends
3. You see their blind spots

Imagine your friend is considering a major career change.

What advice would you give?

Now apply that sage wisdom to yourself.

Boom. You just became your own best advisor.
Question 7: What's the quality of the evidence?

Kahneman doesn't trust your "trustworthy" sources.

He wants you to put on your detective hat and investigate.
Ask yourself:

1. Where did this information come from?
2. Is it peer-reviewed or just someone's opinion?
3. Are there conflicting studies or viewpoints?

For example:
You read a headline: "Coffee cures cancer!"

Before you start chugging espresso, dig deeper.
Is it a single study or a meta-analysis?
Who funded the research?
What do other experts say?

This question turns you from an information consumer into a critical thinker.

It's your BS detector in a world of misinformation.
Question 8: What are the opposing arguments?

Kahneman knows your brain loves to play favorites.

This question forces you to consider the other side.

Why it matters:

1. It challenges your assumptions
2. It prepares you for potential pitfalls
3. It might change your mind (gasp)
Try this:

Before your next big decision, play devil's advocate.

List all the reasons why it might be a terrible idea.

You'll either strengthen your resolve or avoid a costly mistake.

Win-win.
Remember: Your brain is trying to trick you. These questions are your secret weapon.

Use them wisely.
RT the quote below if you found this thread valuable.

Follow me @oledoteth for more threads on investing, entrepreneurship, and health.
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More from @itsolelehmann

Mar 10
i can't believe nobody caught this.

Anthropic's entire growth marketing team was just ONE PERSON

(for 10 months, confirmed)

a single non-technical person ran paid search, paid social, app stores, email marketing, and SEO for the $380B company behind claude

here's exactly how one human is doing the job of a full marketing team:

it starts with a CSV.

1. he exports all his existing ads from his ad platforms along with their performance metrics (click-through rates, conversions, spend, etc)

2. feeds the whole file into claude code

3. and tells it to find what's underperforming.

claude analyzes the data, flags the weak ads, and generates new copy variations on the spot

this is where he gets clever:

he then splits the work into 2 specialized sub-agents:

1. one that only writes headlines (capped at 30 characters)

2. and one that only writes descriptions (capped at 90 characters).

each agent is tuned to its specific constraint so the quality is way higher than cramming both into a single prompt

so now he's got hundreds of fresh headlines and descriptions.

but that's just the text.

he still needs the actual visual ad creative, the images and banners that go on facebook, google, etc.

so he built a figma plugin that:

1. takes all those new headlines and descriptions
2. finds the ad templates in his figma files
3. and automatically swaps the copy into each one.

up to 100 ready-to-publish ad variations generated at half a second per batch.

what used to take hours of duplicating frames and copy-pasting text by hand

so now the ads are live.

the next question is which ones are actually working.

for that he built an MCP server (basically a custom integration that lets claude talk directly to external tools) connected to the meta ads API.

so he can ask claude things like:

• "which ads had the best conversion rate this week"
• or "where am i wasting spend"

and get real answers from live campaign data without ever opening the meta ads dashboard

and the part that ties it all together and closes the loop:

he set up a memory system that logs every hypothesis and experiment result across ad iterations.

so when he goes back to step one and generates the next batch of variations...

claude automatically pulls in what worked and what didn't from all previous rounds.

the system literally gets smarter every cycle.

that kind of systematic experimentation across hundreds of ads would normally need a dedicated analytics person just to track

the numbers from the doc:

ad creation went from 2 hours to 15 minutes. 10x more creative output.

and he's now testing more variations across more channels than most full marketing teams

a $380 billion company.

and their entire growth marketing operation (not GTM) = just one person and claude code lol

truly unbelievableImage
i got community noted last night and thought i was wrong, so i deleted

but it was actually true

confirmed by the one man army himself ↓

insane
full doc from anthropic (growth marketing section on page 15): www-cdn.anthropic.com/58284b19e702b4…
Read 5 tweets
May 20, 2025
The $73M German startup that's making Zapier sweat:

• Built by ONE developer working nights and weekends
• Now has 400+ integrations
• Primed to capture upside in the AI agentic economy

How n8n became Europe's answer to America's automation monopoly: 🧵 Image
Image
In 2019, developer Jan Oberhauser faced a common problem:

Zapier was too limited and expensive. Custom coding was too time-consuming.

So he built n8n in his Berlin apartment after work hours.

Jan created the first version of n8n ("n-eight-n") during evenings and weekends.
When he shared it on Hacker News, users immediately recognized its advantages:

• Visual workflows anyone could understand
• Powerful customization when needed
• Open-source foundation
• Self-hostable with no arbitrary limits

By 2021? Image
Read 12 tweets
May 15, 2025
In 2015, British bankers laughed in his face:

"Zero fees? You'll be bankrupt in months."

Today, Revolut processes £1 TRILLION in transactions and makes £1 BILLION in profit.

How Nikolay Storonsky built Europe's most valuable fintech by breaking every rule in banking 🧵: Image
2015: Russian-born Nikolay Storonsky was frustrated by crazy fees when exchanging currencies during business trips.

His solution? Build it himself.

While traditional banks were charging 5% hidden fees on foreign exchanges, Revolut offered a shocking alternative: Image
Zero fees. Real exchange rates. No bullshit.

The banking establishment laughed.

"You can't make money that way," they said.

But Nikolay Storonsky wasn't building another bank.

Because Revolut was solving real pain points that banks had ignored for decades:
Read 14 tweets
May 14, 2025
The British Royal Navy's new secret weapon:

AI-powered drones that hunt Russian submarines without being detected.

Built by Germany's Helsing, these silent trackers finally illuminate what's hiding in the ocean's depths.

Here's why underwater warfare will never be the same 🧵: Image
Founded in 2021 by 3 founders in Munich, Helsing has become Europe's most valuable defense-tech in just 3 years.

Their mission?

Transform warfare with AI that turns chaos into crystal-clear battlefield awareness.

But their latest breakthrough isn't in the air or on land... Image
It's happening deep beneath the waves.

You see, for decades, tracking Russian submarines has been nearly impossible:

• They're incredibly quiet
• Sound distorts underwater
• Human sonar operators need 5+ years of training
• Covering vast oceans required massive resources Image
Read 16 tweets
May 9, 2025
Last night, I went to a techno-optimist meetup at a hacker house in Berlin.

Europe's tech scene is coming ALIVE again.

15 observations I wrote from the evening 🧵: Image
Image
Something fundamentally shifted in the last 5-6 months

This was very obvious to everyone: the "vibe shift" is felt throughout the ecosystem.

US politics are uniting Europeans more than ever.

Like a shared sense of "it's our time to show we can do shit on our own again."
Ideas like EU Inc have a big mental impact

Even though nothing is enacted yet, concepts like the EU Inc are creating a unifying goal for the ecosystem.

I've been saying steps like this have enormous psychological impact.

Surprisingly, most people were familiar with EU Inc.
Read 18 tweets
May 8, 2025
Europe's tax collectors are harming our economic future.

But 1 fiscal policy change could reverse the damage.

It'd cost almost nothing long-term.
And it'd create massive economic returns.

Here's the radical tax policy every European nation should copy 🧵: Image
First, let's face the brutal reality:

• US startups raised $162.7B in 2024
• EU startups? Just $39.5B
• European founders flee to Silicon Valley daily
• Tech talent exodus accelerating

But it's not about culture or talent - it's about structural barriers. Image
When a EU startup launches, they face immediate taxation that drains critical resources during their most vulnerable phase.

Think what startups need most:

• Cash to develop products
• Resources to hire talent
• Runway to iterate and improve
• Capital to scale operations
Read 17 tweets

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