I finished reading Poor Charlie’s Almanack: The Essential Wit and Wisdom of Charles T. Munger last week. It’s a memoir and collection of famous speeches by Charlie Munger. I’d put off reading it for a while. Looking back, I regret that decision. The book unlocked a different way of evaluating decisions and exposed me to new psychological concepts—some that aren’t even taught in schools. It felt like an introduction to practical psychology for entrepreneurs and investors. I made tons of highlights and notes while reading this book.

I’ll eventually create a blog series on this book, so I won’t go into everything here. But here are a few more takeaways:

• Checklists – Countless times throughout the book, Charlie mentioned using mental checklists as a way to avoid mistakes in your decision process. Checklists are also a central part of David Allen’s Getting Things Done (unrelated) framework. My takeaway is that checklists are simple tools that are available to everyone, but they’re more powerful than people realize when used consistently.
• Multidisciplinary learning – I mentioned this in my post last week (here). If you have a narrow understanding of topics or a small tool set, you increase your risk of the cognitive bias of relying too much on one tool or a limited number of tools. Mark Twain described it well: “To a man with a hammer, everything looks like a nail.” You apply tools to situations for which they’re not appropriate and increase the chances of making subpar decisions. Broad learning about topics that interest you helps prevent this. Often, you discover nonobvious relationships between topics that others have missed, which improves your decision-making and gives you an edge. Charlie mastered this, and it led to a life of curiosity-driven learning and a billion-dollar fortune from shrewd decisions.
• Hard work – Acting and getting things done is one form of hard work. But learning and thinking is another form, one that many people underestimate. Learning and thinking are preparation. Good preparation leads to better decisions and allows you to practice “extreme decisiveness,” which is valuable during extreme uncertainty. From an investing perspective, preparation allows you to identify when something is mispriced and gives you the confidence to bet heavily based on your work, even if everyone else is selling for dear life.
• Incentives – Incentives heavily influence individual decision-making. Getting them right is critical for entrepreneurs and managers. If you want to understand someone’s actions or thought process, think about how they’re being incentivized.
• Lollapalooza effect – When two or more factors work at the same time, they magnify outcomes. This works positively and negatively. This reminded me of twin tailwinds, which I’ve noticed when reading about Henry Singleton (see here), Warren Buffett (see here), and 2021’s IPO explosion (here). These are lollapalooza-effect examples that led to massive wealth creation.
• Mastering wisdom – Mastering the best things others have figured out is a discipline. It’s also a hack. Trying to figure out everything from scratch on your own is hard to do, and most people aren’t smart enough to do it (Charlie’s words, not mine). It’s better to take what others have figured out and build upon their wisdom. Everyone can do it, but many people won’t because it requires a passion for learning and curiosity and is hard work.
• Inversion – If you’re not sure what to do about a problem, think it through backward to figure out what not to do. By knowing what not to do, you’re one step closer to understanding what to do.
• Outsourcing thinking – You can’t outsource your thinking. You must think for yourself and, ideally, in a multidisciplinary manner.

Those are just some of my takeaways from this book. I’m glad I read it and will likely reread it someday.