Published: June 18, 2025
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You’re not in control of your choices. This Nobel Prize winner spent 44 years proving it. Then he wrote a 500-page bestseller that sold 10M+ copies and shocked the world. Here are top 10 mental traps controlling every decision you make:

Image in tweet by Martin
Image in tweet by Martin

Meet Daniel Kahneman: • Nobel Prize in Economics (2002) • NY Times bestselling author (2011) • Presidential Medal of Freedom (2013) For decades, he was obsessed with one question: Why do rational people made irrational decisions?

Image in tweet by Martin

In 1969, Kahneman discovered 2 modes of thinking: System 1 – Fast, Intuitive, Subconscious System 2 – Slow, Analytical, Conscious Most people believe they're rational. But in reality, System 1 controls 95% of your choices. Here are 10 hidden traps controlling your decisions:

Image in tweet by Martin

[1/10] CONJUNCTION FALLACY Your brain looks for stories and narratives to fill. This can lead to irrational errors in judgment, like in the "Linda experiment". Just watch: 👇

[2/10] HINDSIGHT BIAS It's easy to connect dots looking backwards. In hindsight, everything seems clear and obvious. This can lead to overconfidence and error in judgment – since we can "know it all along" only for the past, not for the future.

[3/10] SUNK COST FALLACY Letting go of your investments if difficult. That's why you: • Finish reading bad books • Stay in toxic relationships • Refuse to sell stocks to a loss But logically, the past cost is irrelevant to future value.

[4/10] CONFIRMATION BIAS You only notice information that supports your beliefs. If something don't fit your worldview, you ignore it. In science or politics, this can be a deadly mistake.

[5/10] LOSS AVERSION Human brain is extremely vulnerable to losses. The pain of losing $10 is twice as big as the pleasure of winning $10. If you don't believe me, watch this video: 👇

[6/10] THE ENDOWMENT EFFECT If you own something, you build emotional attachment to it. That's why people refuse to sell their lottery ticket, even for 8x of its price. (even if rationally, it makes zero sense)

[7/10] PRIMACY EFFECT When presented with a list, people remember first items better than the last ones. This has been proved over and over again in scientific studies, but also in social experiments such as this one 👇

[8/10] DECOY EFFECT Decoy effect is a tactic used mostly in marketing. When choosing from 2 items, a third "decoy" item is placed to secretly influence the buying decision. Of course, 99% of customers have no idea that this is happening.

[9/10] FAMILIARITY BIAS Our brains have evolved to seek the familiar and avoid the unfamiliar. Why? Because in nature, familiar usually meant safety, while the unknown often spelled danger.

[10/10] ANCHORING BIAS Your brain can't evaluate thing in vacuum. It always looks for an "anchor", something to compare it to. In marketing, anchoring is used to lower the perceived cost. Just look at this masterclass from Steve Jobs👇

To learn more, I highly recommend "Thinking Fast and Slow". One of the best books I've ever read. It helped me understand my own mind, as well as make better decisions in business and life.

Image in tweet by Martin

I hope this helps. In past, I was addicted to video games, couldn’t find motivation to work, and I kept making horrible life decisions. Then I got obsessed with self-education ... and suddenly it all made sense. I had only one question left:

Why isn’t this taught in schools? Why don’t we learn how our brains, bodies, and minds work? Luckily, learning online saved me where our education system failed. Now I want to use the skill of viral writing to give back my knowledge.

Coaches, Consultants & Course Creators: Want premium viral threads to grow your brand? 100% done-for-you. 100% guaranteed results. Click below if interested: 👇 https://www.martinmasrna.com/s...

And that’s a wrap! How many of these mental traps have you fallen for in your life? Comment below ↓ And if you found this interesting, repost this thread to help more people see it.

Credits for the videos: Conjunction Fallacy: https://www.youtube.com/shorts... Hindsight Bias: https://www.youtube.com/shorts... Sunk Cost Fallacy: https://www.youtube.com/watch?... Confirmation Bias: https://www.youtube.com/watch?... Loss Aversion: https://www.youtube.com/watch?... The Endowment Effect: https://www.youtube.com/watch?...

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