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Now onto today’s edition.

The late, great Charlie Munger didn't beat the market by reading more spreadsheets than everyone else.

He beat it by thinking differently.

Munger's edge was what he called a "latticework of mental models" — frameworks borrowed from psychology, economics, biology, physics, and history. He drilled them in, connected them, and ran every big decision through them.

The result? One of the great investing minds of the 20th century, still worth studying in the 21st.

Here are ten of his best.

1. Inversion

Munger's favorite advice was simple: "Invert, always invert."

Don't just ask how to succeed. Ask what guarantees failure — then avoid it. The negative space is often clearer than the positive.

He told a story about his days as a weather forecaster in the Air Corps. The moment he started making real forecasts for real pilots, he flipped the question from °How could I be great at my job?” to "How could I kill these pilots?" Not because he wanted to, but because knowing the failure modes made him fanatical about avoiding them. Icing. Running out of gas before landing. That was it. Two ways to kill a pilot. So he watched for those two things with a keen eye.

Before you ask how to win, ask how you lose. The answer is usually cleaner.

2. Opportunity Cost

Every decision has a shadow: the thing you gave up to make it.

Munger was relentless about this. Before committing to anything — a stock, a project, a business — he asked: what's my best alternative? If this opportunity isn't clearly better than what I already have, why am I touching it?

Most people evaluate choices in isolation. Munger evaluated them in competition. That single shift in thinking eliminates a lot of mediocre decisions.

3. Circle of Competence

Know what you know. Know what you don't. And be brutally honest about the line between them.

Munger read voraciously across many different disciplines. But he never confused breadth of subjects with depth of knowledge and know-how. When a decision required genuine expertise he didn't have, he either learned what he needed to or he stepped back.

The circle of competence is less about staying conservative with your investing and more about not pretending your expertise is more than it is. Overconfidence in unfamiliar territory (or sectors) kills more investors than ignorance does.

4. Confirmation Bias

The mind loves evidence that confirms ideas it already believes. Munger knew this was one of the most dangerous traps in investing.

Once you've formed a view, your brain starts dismissing contrary evidence and amplifying supportive evidence. Before you know it, you’re imprisoned in an echo chamber of your own devising.

Munger's prescription was to actively seek evidence against your thesis. Find the smartest person who disagrees with you and understand their argument before you make your move. If you can't steelman the other side, you don't understand the position well enough to act on it.

5. The Lollapalooza Effect

One force moving in your direction is useful. Several forces moving together? That's when things get extraordinary.

Munger called it the Lollapalooza Effect. When multiple factors reinforce each other — strong management, a growing market, favorable costs, and high barriers to entry — the outcome is abnormally good.

This explains consumer buying patterns in boom times. When social proof, scarcity, and financial incentives all point in the same direction, people stampede through the store’s entrance at 10 am. Think Black Friday, iPhone releases, or even Cabbage Patch Kids back in the day.

Understanding the convergence is more powerful than analyzing any single factor alone.

6. Second-Order Thinking

Most people think one move ahead. Munger thought two or three.

We’re seeing first order thinking with AI. Bosses just use it to code. Second order thinking would’ve understood that once tokens start reflecting their real costs, people become cheaper to employ than the AI that replaced them.

The first order answer is often obvious and wrong. The second order answer is where the real decision lives. Munger built his investing career on seeing consequences that others stopped short of following.

7. The Map Is Not the Territory

Every model is a simplification. Every theory has unrealistic assumptions.

Munger respected financial models but never trusted them blindly. A balance sheet is a map. The business is the territory. When the two diverge, believe the territory.

The danger isn't building models. The danger is forgetting they're models. Reality is always more complex than the spreadsheet.

8. Mr. Market

Munger borrowed this one from his mentor, Ben Graham. The idea is simple: the stock market is a manic-depressive business partner who shows up every day with a new price for your shares.

Some days he's euphoric and offers you far too much. Some days he's terrified and practically gives things away. Your job isn't to follow his moods. Your job is to take advantage of them.

Buy when he's panicking. Be careful when he's celebrating. The market's short-term swings are noise. The underlying business is what matters.

9. Social Proof

When people are uncertain, they look at what everyone else is doing. Then they do that.

Munger understood this to be one of the most powerful forces in human behavior and one of the most dangerous in markets. Bubbles don't inflate because people are stupid. They inflate because people are social. Everyone is buying, so it must be right.

The investor who recognizes social proof can use it as a contrarian signal (though that’s much harder these days with all the money the Fed prints to keep the indices up). When the crowd is all moving one way with full conviction, ask what they're ignoring.

10. Occam's Razor

When different explanations fit the facts, choose the simplest one.

Munger used this tool for complex financial statements, convoluted business models, and elaborate investment theses. All of them set off his alarm bells. Complexity is where shenanigans hide.

If a company's financial statements needed a PhD to decipher, Munger assumed they had something to hide. The simplest explanation that fits the facts is usually the most honest one.

Wrap Up

Munger didn't have better data than everyone else. He had a better operating system.

These ten models won't make you right every time. Nothing does. But they'll help you avoid the expensive mistakes that most investors make repeatedly — the ones driven by ego, emotion, and the comfortable illusion that what worked last year will work forever.

The latticework takes time to build. Start with one model. Run it until it's second nature. Then add another.

The compounding isn't just in the portfolio. It's in the thinking.