The Adaptability Quotient: Why Smart People Miss Big Changes

Your S&P 500 index fund looks diversified — but Alec Litowitz says its concentration in AI stocks makes it one giant bet in disguise.

Alec Litowitz joined a hedge fund with $100 million in assets and six employees. He had never made a trade in his life.

That fund was Citadel, in its earliest days, and Alec became one of its founding partners alongside Ken Griffin — eventually running its global equities business. He later left to start his own firm, Magnetar Capital, now one of the largest alternative asset managers in the world.

Somewhere across those three decades, Alec noticed something uncomfortable: the smartest, most experienced people in the room are often the last ones to realize the world has changed. Not because they’re not smart. Because they’re the most attached to having already been right.

His new book, The Adaptability Quotient, argues that raw intelligence and experience — IQ and EQ — aren’t enough anymore. What matters now is a third thing: how fast you notice your mental model is wrong, and how willing you are to let it go.

We get into why Blockbuster’s downfall wasn’t really about one bad decision, how to tell whether a shift in your industry is temporary or permanent, why AI might make judgment scarcer even as it makes knowledge abundant, and why Alec says a “diversified” portfolio can secretly be one big bet in disguise.

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Key Takeaways

The biggest ideas from the conversation

Knowledge is now abundant, but judgment is scarce: Litowitz argues that when a resource shifts from scarce to abundant, something else becomes the new bottleneck. With AI making knowledge cheap, the scarce resource left for humans is judgment and agency — your ability to weigh evidence and act on it.
Use AI to expand your thinking, not shrink it: Litowitz warns against asking AI for a single compressed answer, since that hands over your judgment. Instead, bring your own reasoning first, then ask AI to poke holes in it, play devil’s advocate, or point out what you missed.
Your S&P 500 fund is one AI bet: Seven stocks now drive most of the S&P 500’s gains, and they’re all riding the same AI thesis. A supposedly diversified index fund concentrates risk on a single storyline, not five hundred independent ones.
Hold a strong opinion, but hold it loosely: Litowitz calls this a “strong opinion, weakly held” — the best answer you have right now, tested and ready to be replaced the moment better evidence shows up. Confidence comes from how fast you adapt, not from being right the first time.
Chase fast feedback loops, not fancy perks: Litowitz left a cushy investment banking job for trading because the feedback was instant — right or wrong, every second. He tells young people to pick jobs and environments that show them results quickly, since that’s how real learning compounds.
A shock and a regime change aren’t the same: A shock rattles markets but fades if you can wait it out. A true regime change permanently alters what’s produced, flips what’s scarce, moves the bottleneck, and never reverses — which is how Litowitz frames AI’s arrival now.

Resources

Links, tools and references mentioned

The Adaptability Quotient by Alec Litowitz
Alec’s new book, discussed throughout this episode.
Get the book

Grit by Angela Duckworth
Referenced in this episode as a foundational read on perseverance and passion.
Get the book

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