Business
Buying a company below its accounting value can still fail, while paying a premium for a truly good business can work. In the book's account, one cheap purchase that went wrong and one expensive purchase that went right together moved Munger and Buffett away from hunting bargains and toward paying higher prices for quality.
In Munger's view, decisions made from accounting figures alone will keep going wrong. You have to understand what the numbers stand for and ask real questions about how the business actually works.
When several psychological pulls push the same way at once, the result is far bigger than any one of them alone. Munger compares this to a self-feeding chemical reaction and calls it a 'lollapalooza effect'.
If something valuable can't be legally protected, keep it secret, and make a big show of the secrecy. In Munger's example, loudly guarding a recipe adds mystique, which makes the trained response to the brand stronger.
Munger's advice is to try to end each day a little wiser than you started it and to do your duties faithfully. Lasting progress comes from steady accumulation, not sudden leaps.
Buffett kept warning that markets move in cycles and that he would have bad years. After decades of strong results, people stopped believing him, so a long winning streak can make honest warnings seem like empty modesty.
Munger treats a brand name and its packaging as signals, and buying the product as the trained response. The habit is built by rewarding each purchase and by linking the product to things people want but cannot have, the way a dog learns to drool at a bell.
Just watching other people use something prompts people to copy them, which psychologists call social proof. This copying gets people to try a product in the first place, and then helps keep the habit going.
Munger describes his approach as 'pure opportunism': instead of following a fixed plan, he acts when an unusually good chance appears. He pairs this with slow, steady progress, saying you get ahead systematically, though not necessarily in fast bursts.
Munger draws a moral line between holding a few shares in a company and owning the whole thing. He says he would own shares in a tobacco company but would not own one outright, because full ownership brings full responsibility for what the business does.