The Intelligence Trap by David Robson: Why Smart People Do Stupid Things (And How to Stop)

 I used to think that being “smart” was the ultimate cheat code for life.

Then I read The Intelligence Trap (2019) by award-winning science writer David Robson, and realized the uncomfortable truth: high IQ, advanced degrees, and sharp analytical skills can actually make you more likely to screw up — spectacularly — if you don’t have the right mental habits.

Robson doesn’t just throw shade at clever people; he backs it up with decades of research and jaw-dropping real-world examples (think NASA engineers missing obvious flaws that caused shuttle disasters, doctors with perfect credentials killing patients through overconfidence, and hedge-fund geniuses losing billions in a single bad bet).

Here’s the book distilled, plus the practical takeaways that genuinely changed how I think and act.

The Core Idea: Intelligence ≠ Wisdom

Robson shows that traditional intelligence (the kind measured by IQ tests, SAT scores, or how quickly you solve puzzles) has almost zero correlation with rational thinking in real-life situations. In fact, very smart people often fall hardest for these traps:

1. Motivated Reasoning The smarter you are, the better you are at inventing clever justifications for what you want to believe. (Example: highly educated people are actually more polarized on politically charged science issues like climate change or vaccines.)
2. Earned Dogmatism Experts who have invested years mastering a field feel entitled to stop questioning their assumptions. Robson cites doctors who ignored evidence about hand-washing because “they already knew better.”
3. The Bias Blind Spot Intelligent people are more confident they’re immune to bias — which makes them less likely to check for it.
4. Dysrationalia A brilliant term coined by psychologist Keith Stanovich: the ability to think and act stupidly despite high intelligence.

The Antidotes: How to Think Like a Wise Person, Not Just a Smart One

Robson spends the second half of the book giving evidence-based tools to escape the trap. My top five that I actually use:

1. Actively Open-Minded Thinking (AOT) Force yourself to list at least three plausible reasons why you might be wrong before making a big decision. I now do this literally on paper for anything important (investments, hiring, strategy). It feels awkward at first, but it works.
2. Pre-Mortems Before launching a project, imagine it has already failed spectacularly one year from now. Then brainstorm every possible reason. Companies like Amazon and Pixar use this; it catches blind spots that normal planning misses.
3. The “Outside View” (Reference Class Forecasting) Instead of asking “Why will I succeed?”, ask “What’s the base rate for people in my exact situation?” Want to start a restaurant? 60 % fail in the first three years — no matter how brilliant your concept is. This one kills over-optimism fast.
4. Intellectual Humility Practice Robson cites studies showing that simply reminding yourself “I might be wrong” or “Strong opinions, weakly held” measurably improves decision quality. I have the phrase “Strong opinions, weakly held” as my laptop wallpaper now.
5. Deliberate Reflection Rituals Once a month I now do a 15-minute “What did I get wrong this month?” review. Sounds painful. Actually liberating — and it trains the muscle of spotting your own errors while they’re still small.

Real-Life Examples That Still Haunt Me

• NASA engineers in 2003 ignored junior staff warnings about foam striking the Columbia shuttle because the same thing “hadn’t caused problems before.” Seven astronauts died.
• Top medical researchers in the 1990s insisted hormone replacement therapy prevented heart disease in women — because the theory was elegant. Turned out it increased risk. Tens of thousands of women suffered because brilliant people never questioned their story.

Who This Book Is For

• High-achievers who secretly worry they’re “not as smart as people think”
• Leaders, doctors, engineers, investors — anyone whose mistakes are expensive
• Anyone tired of being their own worst enemy despite a high IQ

My Personal Before vs. After

Before reading: I trusted my gut on almost everything because “I’m good at figuring things out.”

After reading: I now treat my first instinctive answer as “Exhibit A” — useful data, but never the final verdict. Every big decision gets a pre-mortem + outside view check. Result? Fewer dumb mistakes, way less ego bruising, and ironically more confidence (the real kind).

Final Verdict

The Intelligence Trap is the most useful “smart person” book I’ve read since Thinking, Fast and Slow. It’s not here to make you feel clever — it’s here to keep you from being an idiot in exactly the ways your intelligence makes possible.

Read it if you never want to be the smartest person in the room who still manages to blow everything up.

Get copy of this book here