"Invest in What You Know" — Peter Lynch Misquoted

The phrase 'invest in what you know' has been twisted to justify reckless bets on meme stocks and crypto by amateur investors, but Peter Lynch intended it for professionals researching familiar industries—not buying Tesla because you own one. This misapplication leads to 70% of retail traders losing money, a failure rate that outperforms only the worst index funds, yet severely underperforms the disciplined strategy of a fund manager who diversifies across sectors. A proper approach, following Lynch's actual method, targets 12% annual returns from informed picks, while the speculative version often loses 40% of value within a year, making it worse than the #7 advice of hoarding cash.